BLIND GASTRIC AND DUODENAL MUCOSAL BIOPSIES IN PATIENTS WITH DUODENAL ULCER AND THOSE WITH AN ULCER-LIKE SYNDROME.
D001706:Biopsy; D004381:Duodenal Ulcer; D005753:Gastric Mucosa; D005756:Gastritis; D006801:Humans; D014456:Ulcer
BIOPSY; DUODENAL ULCER; GASTRIC MUCOSA; GASTRITIS