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Craig A. Friesen, MD

TitleAssociate Division Director, Gastroenterology
InstitutionChildren's Mercy Kansas City
DepartmentPediatrics
Address2401 Gillham Rd
Kansas City MO 64108
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    Other Positions
    TitleMedical Co-Director of Abdominal Pain Program
    InstitutionChildren's Mercy Kansas City
    DepartmentPediatrics

    TitleProfessor of Pediatrics
    InstitutionUniversity of Missouri-Kansas City
    DepartmentPediatrics

    TitleClinical Professor of Pediatrics
    InstitutionUniversity of Kansas Medical Center
    DepartmentPediatrics


    Collapse Biography 
    Collapse education and training
    University of Kansas School of Medicine, Kansas City, KSMD
    Children's Mercy Hospitals and Clinics, Kansas City, MOResidency
    Children's Mercy Hospitals and Clinics, Kansas City, MOFellowship

    Collapse Overview 

    Collapse Bibliography 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Dalal S, Ajit D, Friesen CS, Shakhnovich V, Singh M, Colombo JM, Schurman JV, Friesen CA. Metabolomic comparison of postprandial distress syndrome patients with and without duodenal eosinophilia. J Pediatr Gastroenterol Nutr. 2024 Aug 16. PMID: 39149805.
      View in: PubMed
    2. Keever-Keigher MR, Harvey L, Williams V, Vyhlidal CA, Ahmed AA, Johnston JJ, Louiselle DA, Grundberg E, Pastinen T, Friesen CA, Chevalier R, Smail C, Shakhnovich V. Genomic insights into pediatric intestinal inflammatory and eosinophilic disorders using single-cell RNA-sequencing. Front Immunol. 2024; 15:1420208. PMID: 39192974.
      View in: PubMed
    3. Friesen CS, Shakhnovich V, Toren P, Retke B, Schurman J, Colombo J, Deacy A, Friesen CA, Abdel-Rahman S. A Pilot Study of Ketotifen in Patients Aged 8-17 Years with Functional Dyspepsia Associated with Mucosal Eosinophilia. Paediatr Drugs. 2024 Jul; 26(4):451-457. PMID: 38771467.
      View in: PubMed
    4. Benegal A, Friesen H, Schurman J, Colombo J, Friesen C. Meal related symptoms in youth with chronic abdominal pain: Relationship to anxiety, depression, and sleep dysfunction. J Pediatr Gastroenterol Nutr. 2024 May; 78(5):1091-1097. PMID: 38516908.
      View in: PubMed
    5. Thompson P, Friesen HJ, Schurman JV, Colombo JM, Friesen CA. A Cross-Sectional Study of Sleep Disturbances in Children and Adolescents With Abdominal Pain-Associated Disorders of Gut-Brain Interaction. Clin Pediatr (Phila). 2024 Jun; 63(5):697-702. PMID: 37461213.
      View in: PubMed
    6. Friesen HJ, Thompson P, Schurman JV, Colombo JM, Friesen CA. Overactive bladder syndrome symptoms in youth with abdominal pain-associated disorders of gut-brain interaction. Sci Rep. 2023 07 08; 13(1):11042. PMID: 37422526.
      View in: PubMed
    7. Glynn D, Halma J, Welch H, Shakhnovich V, Friesen C. Nonanaphylactic Variant of Alpha-Gal Syndrome as an Etiology for Chronic Gastrointestinal Symptoms in Children. J Pediatr. 2023 08; 259:113486. PMID: 37201681.
      View in: PubMed
    8. Kaur P, Chevalier R, Friesen C, Ryan J, Sherman A, Page S. Diagnostic role of fractional exhaled nitric oxide in pediatric eosinophilic esophagitis, relationship with gastric and duodenal eosinophils. World J Gastrointest Endosc. 2023 May 16; 15(5):407-419. PMID: 37274554.
      View in: PubMed
    9. Kichline T, Cushing CC, Connelly M, Black WR, Simons LE, Friesen C, Schurman JV. Microtemporal Relationships in the Fear Avoidance Model: An Ecological Momentary Assessment Study. Clin J Pain. 2022 09 01; 38(9):562-567. PMID: 35866559.
      View in: PubMed
    10. Ryan JL, Sherman AK, Heble DE, Friesen CA, Daniel JF, Fischer RT, Slowik V. The effect of neuropsychiatric medication on pediatric nonalcoholic fatty liver disease. Clin Transl Sci. 2022 09; 15(9):2241-2250. PMID: 35769031.
      View in: PubMed
    11. Kaul I, Staggs VS, Bagherian A, Ali A, Shulman RJ, Colombo JM, Schurman JV, Chumpitazi BP, Friesen CA. Pediatric Rome IV diagnosis agreement is greater than agreement on diagnostic testing. Neurogastroenterol Motil. 2022 08; 34(8):e14355. PMID: 35279913.
      View in: PubMed
    12. Friesen AS, Livitz M, Glynn EF, Schurman JV, Colombo JM, Friesen CA. High Rate of Emergency Department Care in Youth With Abdominal Pain-Associated Functional Gastrointestinal Disorders. Pediatr Emerg Care. 2022 Mar 01; 38(3):e1041-e1045. PMID: 35226628.
      View in: PubMed
    13. Issa A, Edwards J, Singh M, Friesen C, Edwards S. Presence of Increased Mast Cells in Infants and Children with Volume and Variety Limited Intake. Nutrients. 2022 Jan 15; 14(2). PMID: 35057546.
      View in: PubMed
    14. Livitz M, Friesen AS, Glynn EF, Schurman JV, Colombo JM, Friesen CA. Healthcare System-to-System Cost Variability in the Care of Pediatric Abdominal Pain-Associated Functional Gastrointestinal Disorders. Children (Basel). 2021 Nov 01; 8(11). PMID: 34828700.
      View in: PubMed
    15. Martinez M, Rathod S, Friesen HJ, Rosen JM, Friesen CA, Schurman JV. Rumination Syndrome in Children and Adolescents: A Mini Review. Front Pediatr. 2021; 9:709326. PMID: 34490165.
      View in: PubMed
    16. Friesen C, Colombo JM, Deacy A, Schurman JV. An Update on the Assessment and Management of Pediatric Abdominal Pain. Pediatric Health Med Ther. 2021; 12:373-393. PMID: 34393542.
      View in: PubMed
    17. Friesen C, Colombo J, Schurman J. Update on the Role of Allergy in Pediatric Functional Abdominal Pain Disorders: A Clinical Perspective. Nutrients. 2021 Jun 16; 13(6). PMID: 34208479.
      View in: PubMed
    18. Cushing CC, Kichline T, Friesen C, Schurman JV. Individual Differences in the Relationship Between Pain Fear, Avoidance, and Pain Severity in a Chronic Abdominal Pain Sample and the Moderating Effect of Child Age. Ann Behav Med. 2021 06 02; 55(6):571-579. PMID: 33300992.
      View in: PubMed
    19. Singh V, Singh M, Friesen CA. Colonic mucosal eosinophilia in children without inflammatory bowel disease. Hum Pathol. 2021 07; 113:34-38. PMID: 33887304.
      View in: PubMed
    20. Friesen HJ, Rosen J, Low Kapalu C, Singh M, Spaeth T, Cocjin JT, Friesen CA, Schurman JV. Mucosal eosinophils, mast cells, and intraepithelial lymphocytes in youth with rumination syndrome. Neurogastroenterol Motil. 2021 10; 33(10):e14155. PMID: 33837997.
      View in: PubMed
    21. Schurman JV, Friesen CA. Leveraging Institutional Support to Build an Integrated Multidisciplinary Care Model in Pediatric Inflammatory Bowel Disease. Children (Basel). 2021 Apr 08; 8(4). PMID: 33917659.
      View in: PubMed
    22. Colombo JM, Deacy AD, Schurman JV, Friesen CA. Heartburn in children and adolescents in the presence of functional dyspepsia and/or irritable bowel syndrome correlates with the presence of sleep disturbances, anxiety, and depression. Medicine (Baltimore). 2021 Apr 02; 100(13):e25426. PMID: 33787652.
      View in: PubMed
    23. Colombo JM, Friesen CS, Garg U, Friesen CA, Pablo WS. Relationships between disaccharidase deficiencies, duodenal inflammation and symptom profile in children with abdominal pain. Sci Rep. 2021 03 01; 11(1):4902. PMID: 33649365.
      View in: PubMed
    24. Edwards J, Friesen C, Issa A, Edwards S. Esophageal, Gastric, and Duodenal Histologic Findings in Patients with Feeding Difficulties. Nutrients. 2020 Sep 15; 12(9). PMID: 32942680.
      View in: PubMed
    25. Singh M, Singh V, Schurman JV, Colombo JM, Friesen CA. The relationship between mucosal inflammatory cells, specific symptoms, and psychological functioning in youth with irritable bowel syndrome. Sci Rep. 2020 07 20; 10(1):11988. PMID: 32686762.
      View in: PubMed
    26. Rathod S, Friesen CA, Radford K, Colombo JM. Sucrase Breath Testing in Children Presenting With Chronic Abdominal Pain. Clin Pediatr (Phila). 2020 11; 59(13):1191-1194. PMID: 32686473.
      View in: PubMed
    27. Friesen C, Singh M, Singh V, Schurman JV. A cross-sectional study of nausea in functional abdominal pain: relation to mucosal mast cells and psychological functioning. BMC Gastroenterol. 2020 May 11; 20(1):144. PMID: 32393272.
      View in: PubMed
    28. Singh M, Singh V, Friesen CA. Colonic mucosal inflammatory cells in children and adolescents with lactase deficiency. Pathol Res Pract. 2020 Jun; 216(6):152971. PMID: 32331918.
      View in: PubMed
    29. Simon DA, Friesen CA, Schurman JV, Colombo JM. Biliary Dyskinesia in Children and Adolescents: A Mini Review. Front Pediatr. 2020; 8:122. PMID: 32266192.
      View in: PubMed
    30. Vargas-Luna FM, Huerta-Franco MR, Schurman JV, Deacy AD, Bagherian A, Harvey L, Friesen CA. Electrogastrographic and autonomic nervous system responses to solid and liquid meals in youth with functional dyspepsia. Neurogastroenterol Motil. 2020 04; 32(4):e13785. PMID: 32017336.
      View in: PubMed
    31. Singh M, Singh V, Schurman JV, Friesen CA. Mucosal Th17 Cells Are Increased in Pediatric Functional Dyspepsia Associated with Chronic Gastritis. Dig Dis Sci. 2020 11; 65(11):3184-3190. PMID: 31916087.
      View in: PubMed
    32. Monzon AD, Cushing CC, Friesen CA, Schurman JV. The Association Between Affect and Sleep in Adolescents With and Without FGIDs. J Pediatr Psychol. 2020 01 01; 45(1):110-119. PMID: 31769842.
      View in: PubMed
    33. Cushing CC, Kichline T, Blossom JB, Friesen CA, Schurman JV. Tailoring Individualized Evaluation of Pediatric Abdominal Pain Using Ecological Momentary Assessment (EMA): A Pilot Study Testing Feasibility and Acceptability. Clin J Pain. 2019 11; 35(11):859-868. PMID: 31436560.
      View in: PubMed
    34. Vargas-Luna FM, Huerta-Franco MR, Schurman JV, Deacy AD, Bagherian A, Harvey L, Friesen CA. Heart Rate Variability and Gastric Electrical Response to a Cold Pressor Task in Youth with Functional Dyspepsia. Dig Dis Sci. 2020 04; 65(4):1074-1081. PMID: 31549333.
      View in: PubMed
    35. Hijaz NM, Attard TM, Colombo JM, Mardis NJ, Friesen CA. Comparison of the use of wireless capsule endoscopy with magnetic resonance enterography in children with inflammatory bowel disease. World J Gastroenterol. 2019 Jul 28; 25(28):3808-3822. PMID: 31391775.
      View in: PubMed
    36. Chandra S, Friesen C, Attard TM. Trends in the epidemiology of pediatric acute and chronic cholecystitis-related admissions in the USA: a nationwide emergency department and inpatient sample study. J Investig Med. 2019 12; 67(8):1155-1159. PMID: 31324692.
      View in: PubMed
    37. Kichline T, Cushing CC, Ortega A, Friesen C, Schurman JV. Associations Between Physical Activity and Chronic Pain Severity in Youth With Chronic Abdominal Pain. Clin J Pain. 2019 07; 35(7):618-624. PMID: 31008726.
      View in: PubMed
    38. Deacy AD, Friesen CA, Staggs VS, Schurman JV. Evaluation of clinical outcomes in an interdisciplinary abdominal pain clinic: A retrospective, exploratory review. World J Gastroenterol. 2019 Jun 28; 25(24):3079-3090. PMID: 31293343.
      View in: PubMed
    39. Zhang N, Heruth DP, Wu W, Zhang LQ, Nsumu MN, Shortt K, Li K, Jiang X, Wang B, Friesen C, Li DY, Ye SQ. Functional characterization of SLC26A3 c.392C>G (p.P131R) mutation in intestinal barrier function using CRISPR/CAS9-created cell models. Cell Biosci. 2019; 9:40. PMID: 31114672.
      View in: PubMed
    40. Edwards ST, Cocjin J, Theut SB, Rivard D, Sherman AK, Friesen CA. A comparison of the diagnosis of gastroparesis in 4?h pediatric gastric emptying studies versus 2?h studies. BMC Gastroenterol. 2019 Feb 11; 19(1):26. PMID: 30744574.
      View in: PubMed
    41. Shortt K, Heruth DP, Zhang N, Wu W, Singh S, Li DY, Zhang LQ, Wyckoff GJ, Qi LS, Friesen CA, Ye SQ. Identification of Novel Regulatory Genes in APAP Induced Hepatocyte Toxicity by a Genome-Wide CRISPR-Cas9 Screen. Sci Rep. 2019 02 04; 9(1):1396. PMID: 30718897.
      View in: PubMed
    42. Shakhnovich V, Abdel-Rahman S, Friesen CA, Weigel J, Pearce RE, Gaedigk A, Leeder JS, Kearns GL. Lean body weight dosing avoids excessive systemic exposure to proton pump inhibitors for children with obesity. Pediatr Obes. 2019 01; 14(1). PMID: 30257076.
      View in: PubMed
    43. Friesen CA, Schurman JV. The challenges of evolving Rome criteria for functional dyspepsia. Transl Gastroenterol Hepatol. 2018; 3:63. PMID: 30363737.
      View in: PubMed
    44. Friesen C, Singh M, Singh V, Schurman JV. An observational study of headaches in children and adolescents with functional abdominal pain: Relationship to mucosal inflammation and gastrointestinal and somatic symptoms. Medicine (Baltimore). 2018 Jul; 97(30):e11395. PMID: 30045261.
      View in: PubMed
    45. Singh V, Singh M, Schurman JV, Friesen CA. Histopathological changes in the gastroduodenal mucosa of children with functional dyspepsia. Pathol Res Pract. 2018 Aug; 214(8):1173-1178. PMID: 30078402.
      View in: PubMed
    46. Zhang LQ, Nsumu M, Huang P, Heruth DP, Riordan SM, Shortt K, Zhang N, Grigoryev DN, Li DY, Friesen CA, Van Haandel L, Leeder JS, Olson J, Ye SQ. Novel Protective Role of Nicotinamide Phosphoribosyltransferase in Acetaminophen-Induced Acute Liver Injury in Mice. Am J Pathol. 2018 07; 188(7):1640-1652. PMID: 29684358.
      View in: PubMed
    47. Septer S, Bohaty B, Onikul R, Kumar V, Williams KB, Attard TM, Friesen CA, Friesen LR. Dental anomalies in pediatric patients with familial adenomatous polyposis. Fam Cancer. 2018 04; 17(2):229-234. PMID: 28887722.
      View in: PubMed
    48. Edwards T, Friesen C, Schurman JV. Classification of pediatric functional gastrointestinal disorders related to abdominal pain using Rome III vs. Rome IV criterions. BMC Gastroenterol. 2018 Mar 17; 18(1):41. PMID: 29549882.
      View in: PubMed
    49. Friesen LR, Bohaty B, Onikul R, Walker MP, Abraham C, Williams KB, Cocjin JT, Cocjin EL, Friesen CA. Is histologic esophagitis associated with dental erosion: a cross-sectional observational study? BMC Oral Health. 2017 Aug 10; 17(1):116. PMID: 28797247.
      View in: PubMed
    50. Hijaz NM, Friesen CA. Managing acute abdominal pain in pediatric patients: current perspectives. Pediatric Health Med Ther. 2017; 8:83-91. PMID: 29388612.
      View in: PubMed
    51. Schurman JV, Karazsia BT, Friesen CA. Examination of competing diagnostic models of functional gastrointestinal disorders related to pain in children. Neurogastroenterol Motil. 2017 Nov; 29(11). PMID: 28656703.
      View in: PubMed
    52. Friesen CA, Rosen JM, Schurman JV. Prevalence of overlap syndromes and symptoms in pediatric functional dyspepsia. BMC Gastroenterol. 2016 Jul 25; 16(1):75. PMID: 27457769.
      View in: PubMed
    53. Shakhnovich V, Vyhlidal C, Friesen C, Hildreth A, Singh V, Daniel J, Kearns GL, Leeder JS. Decreased Pregnane X Receptor Expression in Children with Active Crohn's Disease. Drug Metab Dispos. 2016 07; 44(7):1066-9. PMID: 27013401.
      View in: PubMed
    54. Zybach K, Friesen CA, Schurman JV. Therapeutic effect of melatonin on pediatric functional dyspepsia: A pilot study. World J Gastrointest Pharmacol Ther. 2016 Feb 06; 7(1):156-61. PMID: 26855822.
      View in: PubMed
    55. Yang M, Geng L, Xu Z, Chen P, Friesen CA, Gong S, Li DY. Severe Food Protein-Induced Enterocolitis Syndrome to Cow's Milk in Infants. Nutrients. 2015 Dec 22; 8(1). PMID: 26703722.
      View in: PubMed
    56. Friesen CA, Schurman JV, Abdel-Rahman SM. Present state and future challenges in pediatric abdominal pain therapeutics research: Looking beyond the forest. World J Gastrointest Pharmacol Ther. 2015 Nov 06; 6(4):96-104. PMID: 26558142.
      View in: PubMed
    57. Bass JA, Friesen CA, Deacy AD, Neilan NA, Bracken JM, Shakhnovich V, Singh V. Investigation of potential early Histologic markers of pediatric inflammatory bowel disease. BMC Gastroenterol. 2015 Oct 13; 15:129. PMID: 26463759.
      View in: PubMed
    58. Hijaz NM, Friesen CA, Schurman JV, Pearce RE, Abdel-Rahman SM. Plasma ghrelin and liquid gastric emptying in children with functional dyspepsia consistent with post-prandial distress syndrome. Neurogastroenterol Motil. 2015 Aug; 27(8):1120-6. PMID: 25962328.
      View in: PubMed
    59. Yang M, Geng L, Chen P, Wang F, Xu Z, Liang C, Li H, Fang T, Friesen CA, Gong S, Li D. Effectiveness of dietary allergen exclusion therapy on eosinophilic colitis in Chinese infants and young children = 3 years of age. Nutrients. 2015 Mar 11; 7(3):1817-27. PMID: 25768952.
      View in: PubMed
    60. Rosen JM, Cocjin JT, Schurman JV, Colombo JM, Friesen CA. Visceral hypersensitivity and electromechanical dysfunction as therapeutic targets in pediatric functional dyspepsia. World J Gastrointest Pharmacol Ther. 2014 Aug 06; 5(3):122-38. PMID: 25133041.
      View in: PubMed
    61. Schurman JV, Kessler ED, Friesen CA. Understanding and treatment of chronic abdominal pain in pediatric primary care. Clin Pediatr (Phila). 2014 Oct; 53(11):1032-40. PMID: 25079069.
      View in: PubMed
    62. Neilan NA, Garg UC, Schurman JV, Friesen CA. Intestinal permeability in children/adolescents with functional dyspepsia. BMC Res Notes. 2014 May 01; 7:275. PMID: 24886078.
      View in: PubMed
    63. Friesen CA, Schurman JV, Colombo JM, Abdel-Rahman SM. Eosinophils and mast cells as therapeutic targets in pediatric functional dyspepsia. World J Gastrointest Pharmacol Ther. 2013 Nov 06; 4(4):86-96. PMID: 24199024.
      View in: PubMed
    64. Colombo JM, Neilan NA, Schurman JV, Friesen CA. Validation of methods to assess potential biomarkers in pediatric patients with esophageal eosinophilia. World J Gastrointest Pharmacol Ther. 2013 Nov 06; 4(4):113-9. PMID: 24199027.
      View in: PubMed
    65. Turner D, Friesen C. Authors' response. J Pediatr Gastroenterol Nutr. 2013 Oct; 57(4):e25-6. PMID: 23820406.
      View in: PubMed
    66. Schurman JV, Hunter HL, Danda CE, Friesen CA, Hyman PE, Cocjin JT. Parental illness encouragement behavior among children with functional gastrointestinal disorders: a factor analysis with implications for research and clinical practice. J Clin Psychol Med Settings. 2013 Jun; 20(2):255-61. PMID: 22945665.
      View in: PubMed
    67. Turner D, Wolters VM, Russell RK, Shakhnovich V, Muise AM, Ledder O, Ngan B, Friesen C. Anti-TNF, infliximab, and adalimumab can be effective in eosinophilic bowel disease. J Pediatr Gastroenterol Nutr. 2013 May; 56(5):492-7. PMID: 23221994.
      View in: PubMed
    68. Cushing CC, Friesen CA, Schurman JV. Collaboration with medical professionals in clinical practice: pediatric abdominal pain as a case example. Fam Syst Health. 2012 Dec; 30(4):279-90. PMID: 23276139.
      View in: PubMed
    69. Schurman JV, Friesen CA, Dai H, Danda CE, Hyman PE, Cocjin JT. Sleep problems and functional disability in children with functional gastrointestinal disorders: an examination of the potential mediating effects of physical and emotional symptoms. BMC Gastroenterol. 2012 Oct 15; 12:142. PMID: 23067390.
      View in: PubMed
    70. Miller MK, Dowd MD, Friesen CA, Walsh-Kelly CM. A randomized trial of enema versus polyethylene glycol 3350 for fecal disimpaction in children presenting to an emergency department. Pediatr Emerg Care. 2012 Feb; 28(2):115-9. PMID: 22270500.
      View in: PubMed
    71. Friesen CA, Neilan N, Daniel JF, Radford K, Schurman JV, Li DY, Andre L, St Peter SD, Holcomb GW. Mast cell activation and clinical outcome in pediatric cholelithiasis and biliary dyskinesia. BMC Res Notes. 2011 Sep 06; 4:322. PMID: 21896203.
      View in: PubMed
    72. Schurman JV, Singh M, Singh V, Neilan N, Friesen CA. Symptoms and subtypes in pediatric functional dyspepsia: relation to mucosal inflammation and psychological functioning. J Pediatr Gastroenterol Nutr. 2010 Sep; 51(3):298-303. PMID: 20479684.
      View in: PubMed
    73. Schurman JV, Friesen CA. Integrative treatment approaches: family satisfaction with a multidisciplinary paediatric Abdominal Pain Clinic. Int J Integr Care. 2010 Aug 02; 10. PMID: 20922066.
      View in: PubMed
    74. Neilan NA, Dowling PJ, Taylor DL, Ryan P, Schurman JV, Friesen CA. Useful biomarkers in pediatric eosinophilic duodenitis and their existence: a case-control, single-blind, observational pilot study. J Pediatr Gastroenterol Nutr. 2010 Apr; 50(4):377-84. PMID: 20216101.
      View in: PubMed
    75. Schurman JV, Wu YP, Grayson P, Friesen CA. A pilot study to assess the efficacy of biofeedback-assisted relaxation training as an adjunct treatment for pediatric functional dyspepsia associated with duodenal eosinophilia. J Pediatr Psychol. 2010 Sep; 35(8):837-47. PMID: 20185416.
      View in: PubMed
    76. Schurman JV, Hunter HL, Friesen CA. Conceptualization and treatment of chronic abdominal pain in pediatric gastroenterology practice. J Pediatr Gastroenterol Nutr. 2010 Jan; 50(1):32-7. PMID: 19915496.
      View in: PubMed
    77. Jones BL, Pearce RE, Abdel-Rahman SM, Friesen CA, James LP, Kearns GL. Characterization of delayed liquid gastric emptying in children by the (13)C-acetate breath test. J Breath Res. 2009 Dec; 3(4):047004. PMID: 21386201.
      View in: PubMed
    78. Friesen CA, Lin Z, Schurman JV, Andre L, McCallum RW. The effect of a meal and water loading on heart rate variability in children with functional dyspepsia. Dig Dis Sci. 2010 Aug; 55(8):2283-7. PMID: 19882248.
      View in: PubMed
    79. Friesen CA, Neilan NA, Schurman JV, Taylor DL, Kearns GL, Abdel-Rahman SM. Montelukast in the treatment of duodenal eosinophilia in children with dyspepsia: effect on eosinophil density and activation in relation to pharmacokinetics. BMC Gastroenterol. 2009 May 11; 9:32. PMID: 19432972.
      View in: PubMed
    80. Schurman JV, Danda CE, Friesen CA, Hyman PE, Simon SD, Cocjin JT. Variations in psychological profile among children with recurrent abdominal pain. J Clin Psychol Med Settings. 2008 Sep; 15(3):241-51. PMID: 19104969.
      View in: PubMed
    81. Friesen CA, Lin Z, Singh M, Singh V, Schurman JV, Burchell N, Cocjin JT, McCallum RW. Antral inflammatory cells, gastric emptying, and electrogastrography in pediatric functional dyspepsia. Dig Dis Sci. 2008 Oct; 53(10):2634-40. PMID: 18320315.
      View in: PubMed
    82. Friesen CA, Lin Z, Schurman JV, Andre L, Mc Callum RW. Autonomic nervous system response to a solid meal and water loading in healthy children: its relation to gastric myoelectrical activity. Neurogastroenterol Motil. 2007 May; 19(5):376-82. PMID: 17509019.
      View in: PubMed
    83. Schurman JV, Friesen CA, Andre L, Welchert E, Lavenbarg T, Danda CE, Cocjin JT, Hyman PE. Diagnostic utility of the water load test in children with chronic abdominal pain. J Pediatr Gastroenterol Nutr. 2007 Jan; 44(1):51-7. PMID: 17204953.
      View in: PubMed
    84. Friesen CA, Lin Z, Schurman JV, Andre L, McCallum RW. An evaluation of adult electrogastrography criteria in healthy children. Dig Dis Sci. 2006 Oct; 51(10):1824-8. PMID: 16957992.
      View in: PubMed
    85. Rau B, Friesen CA, Daniel JF, Qadeer A, You-Li D, Roberts CC, Holcomb GW. Gallbladder wall inflammatory cells in pediatric patients with biliary dyskinesia and cholelithiasis: a pilot study. J Pediatr Surg. 2006 Sep; 41(9):1545-8. PMID: 16952589.
      View in: PubMed
    86. Friesen CA, Lin Z, Hyman PE, Andre L, Welchert E, Schurman JV, Cocjin JT, Burchell N, Pulliam S, Moore A, Lavenbarg T, McCallum RW. Electrogastrography in pediatric functional dyspepsia: relationship to gastric emptying and symptom severity. J Pediatr Gastroenterol Nutr. 2006 Mar; 42(3):265-9. PMID: 16540794.
      View in: PubMed
    87. Friesen CA, Sandridge L, Andre L, Roberts CC, Abdel-Rahman SM. Mucosal eosinophilia and response to H1/H2 antagonist and cromolyn therapy in pediatric dyspepsia. Clin Pediatr (Phila). 2006 Mar; 45(2):143-7. PMID: 16528434.
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    88. Schurman JV, Friesen CA. Chronic abdominal pain in children: an update. Mo Med. 2006 Jan-Feb; 103(1):69-75; quiz 75-6. PMID: 16579309.
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    89. Schurman JV, Friesen CA, Danda CE, Andre L, Welchert E, Lavenbarg T, Cocjin JT, Hyman PE. Diagnosing functional abdominal pain with the Rome II criteria: parent, child, and clinician agreement. J Pediatr Gastroenterol Nutr. 2005 Sep; 41(3):291-5. PMID: 16131983.
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    90. Buscemi N, Vandermeer B, Friesen C, Bialy L, Tubman M, Ospina M, Klassen TP, Witmans M. Manifestations and management of chronic insomnia in adults. Evid Rep Technol Assess (Summ). 2005 Jun; (125):1-10. PMID: 15989374.
      View in: PubMed
    91. Friesen CA, Lin Z, Garola R, Andre L, Burchell N, Moore A, Roberts CC, McCallum RW. Chronic gastritis is not associated with gastric dysrhythmia or delayed solid emptying in children with dyspepsia. Dig Dis Sci. 2005 Jun; 50(6):1012-8. PMID: 15986846.
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    92. Friesen CA, Calabro C, Christenson K, Carpenter E, Welchert E, Daniel JF, Haslag S, Roberts CC. Safety of infliximab treatment in pediatric patients with inflammatory bowel disease. J Pediatr Gastroenterol Nutr. 2004 Sep; 39(3):265-9. PMID: 15319627.
      View in: PubMed
    93. Carpenter E, Jackson MA, Friesen CA, Scarbrough M, Roberts CC. Crohn's-associated chronic recurrent multifocal osteomyelitis responsive to infliximab. J Pediatr. 2004 Apr; 144(4):541-4. PMID: 15069408.
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    94. Friesen CA, Kearns GL, Andre L, Neustrom M, Roberts CC, Abdel-Rahman SM. Clinical efficacy and pharmacokinetics of montelukast in dyspeptic children with duodenal eosinophilia. J Pediatr Gastroenterol Nutr. 2004 Mar; 38(3):343-51. PMID: 15076638.
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    95. Friesen CA, Andre L, Garola R, Hodge C, Roberts C. Activated duodenal mucosal eosinophils in children with dyspepsia: a pilot transmission electron microscopic study. J Pediatr Gastroenterol Nutr. 2002 Sep; 35(3):329-33. PMID: 12352522.
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    96. Chezem J, Friesen C, Clark H. Sources of infant feeding information used by pregnant women. J Perinat Educ. 2001; 10(3):20-6. PMID: 17273262.
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    97. Neustrom MR, Friesen C. Treatment of eosinophilic gastroenteritis with montelukast. J Allergy Clin Immunol. 1999 Aug; 104(2 Pt 1):506. PMID: 10452782.
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    98. Chezem J, Friesen C. Attendance at breast-feeding support meetings: relationship to demographic characteristics and duration of lactation in women planning postpartum employment. J Am Diet Assoc. 1999 Jan; 99(1):83-5. PMID: 9917738.
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    99. Chezem J, Friesen C, Montgomery P, Fortman T, Clark H. Lactation duration: influences of human milk replacements and formula samples on women planning postpartum employment. J Obstet Gynecol Neonatal Nurs. 1998 Nov-Dec; 27(6):646-51. PMID: 9836159.
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    100. Fulda S, Los M, Friesen C, Debatin KM. Chemosensitivity of solid tumor cells in vitro is related to activation of the CD95 system. Int J Cancer. 1998 Mar 30; 76(1):105-14. PMID: 9533769.
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    101. Dunlap CL, Friesen CA, Shultz R. Chronic stomatitis: an early sign of Crohn's disease. J Am Dent Assoc. 1997 Mar; 128(3):347-8. PMID: 9066219.
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    102. Bendorf K, Friesen CA, Roberts CC. Glucose response to discontinuation of parenteral nutrition in patients less than 3 years of age. JPEN J Parenter Enteral Nutr. 1996 Mar-Apr; 20(2):120-2. PMID: 8676529.
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    103. Friesen CA, Wiens LA, Burry VF, Portnoy J, Roberts CC. C-reactive protein in acute pulmonary exacerbations of patients with cystic fibrosis. Pediatr Pulmonol. 1995 Oct; 20(4):215-9. PMID: 8606850.
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    104. Friesen CA, Zwick DL, Streed CJ, Zalles C, Roberts CC. Grasp biopsy, suction biopsy, and clinical history in the evaluation of esophagitis in infants 0-6 months of age. J Pediatr Gastroenterol Nutr. 1995 Apr; 20(3):300-4. PMID: 7608824.
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    105. Friesen CA, Streed CJ, Carney LA, Zwick DL, Roberts CC. Esophagitis and modified Bernstein tests in infants with apparent life-threatening events. Pediatrics. 1994 Oct; 94(4 Pt 1):541-4. PMID: 7936868.
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    106. Friesen CA, Bauer ML, Shaw W, Burry VF, Roberts CC. Urinary 5-HIAA unrelated to cystic fibrosis. Chest. 1994 Oct; 106(4):1309. PMID: 7523037.
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    107. Friesen CA, Zwick DL, Sandridge L, Roberts CC. Pediatric dyspepsia responsive to oral cromolyn: a report of eleven cases. J Pediatr Gastroenterol Nutr. 1993 Oct; 17(3):326-8. PMID: 8271137.
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    108. Friesen CA, Holder TM, Ashcraft KW, Hodge C, Roberts CC. Abbreviated esophageal pH monitoring as an indication for fundoplication in children. J Pediatr Surg. 1992 Jun; 27(6):775-7. PMID: 1501045.
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    109. Friesen CA, Hayes R, Hodge C, Roberts CC. Comparison of methods of assessing 24-hour intraesophageal pH recordings in children. J Pediatr Gastroenterol Nutr. 1992 Apr; 14(3):252-5. PMID: 1619527.
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    110. Friesen CA, Hodge C, Roberts CC. Accuracy and reproducibility of 12-h esophageal pH monitoring. J Pediatr Gastroenterol Nutr. 1991 Feb; 12(2):166-8. PMID: 2051266.
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    111. Friesen CA, Hoerr SL. Nutrition education strategies for work-site wellness: evaluation of a graduate course targeted to work-site wellness majors. J Am Diet Assoc. 1990 Jun; 90(6):854-6. PMID: 2345261.
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    112. Friesen CA, Roberts CC. Cholelithiasis. Clinical characteristics in children. Case analysis and literature review. Clin Pediatr (Phila). 1989 Jul; 28(7):294-8. PMID: 2661103.
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    113. Friesen CA, Gamis AS, Riddell LD, Roberts CC, Jackson MA. Bilirubinuria: an early indicator of gallbladder hydrops associated with Kawasaki disease. J Pediatr Gastroenterol Nutr. 1989 Apr; 8(3):384-6. PMID: 2709270.
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