METHODS OF SMALL-BOWEL BIOPSY.
D001706:Biopsy; D004724:Endoscopy; D004864:Equipment and Supplies; D005762:Gastroenterology; D007421:Intestine, Small; D007422:Intestines; D013270:Stomach
BIOPSY; EQUIPMENT AND SUPPLIES; GASTROENTEROLOGY; INTESTINE, SMALL; STOMACH