[PERFORATED GASTRODUODENAL ULCER. FREQUENCY AMONG ELDERLY MEN].
D000293:Adolescent; D000368:Aged; D005853:Geriatrics; D006801:Humans; D008297:Male; D010439:Peptic Ulcer Perforation; D012907:Smoking
ADOLESCENCE; GERIATRICS; PEPTIC ULCER PERFORATION; SMOKING
ULCUS VENTRICULI ET DUODENI PERFORATUM FREKVENSEN HOS AELDRE MAEND.