title: Small bowel biopsy (per oral).
mesh_terms: D001706:Biopsy / Q000295:instrumentation*; D006801:Humans; D007410:Intestinal Diseases / Q000473:pathology*; D007421:Intestine, Small / Q000473:pathology*; D007441:Intubation, Gastrointestinal / Q000295:instrumentation*