The overlap of functional abdominal pain in pediatric Crohn's disease.
Zimmerman LA, Srinath AI, Goyal A, Bousvaros A, Ducharme P, Szigethy E, Nurko S. The overlap of functional abdominal pain in pediatric Crohn's disease. Inflamm Bowel Dis. 2013 Mar-Apr; 19(4):826-31.