title: Motor and absorptive abnormalities of the gastrointestinal tract, Part I. The upper gastrointestinal tract.
mesh_terms: D002446:Celiac Disease / Q000209:etiology; D003248:Constipation / Q000209:etiology; D048909:Diabetes Complications; D003967:Diarrhea / Q000209:etiology; D004935:Esophageal Diseases / Q000209:etiology; D005767:Gastrointestinal Diseases / Q000209:etiology*; D005769:Gastrointestinal Motility; D006801:Humans; D007408:Intestinal Absorption