title: Duodenal ulcer in black populations in Africa south of the Sahara.
mesh_terms: D000350:Africa, Central; D000351:Africa, Eastern; D000353:Africa, Southern; D000354:Africa, Western; D001741:Black or African American; D000367:Age Factors; D000428:Alcohol Drinking; D044383:Black People; D002110:Caffeine / Q000009:adverse effects; D003212:Condiments / Q000009:adverse effects; D004040:Dietary Carbohydrates / Q000009:adverse effects; D004381:Duodenal Ulcer / Q000150:complications / Q000453:epidemiology* / Q000209:etiology / Q000266:history; D004777:Environment; D005260:Female; D049673:History, 20th Century; D006725:Hookworm Infections / Q000150:complications; D006801:Humans; D008297:Male; D009748:Nutrition Disorders / Q000150:complications; D012737:Sex Factors; D012907:Smoking / Q000150:complications; D013276:Stomach Ulcer / Q000453:epidemiology; D013312:Stress, Physiological / Q000150:complications
chemical_list: D004040:Dietary Carbohydrates; D002110:Caffeine