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.