Peptic ulcer aetiology and pathogenesis.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001789:Blood Group Antigens; D002648:Child; D002980:Climate; D004032:Diet; D005260:Female; D005750:Gastric Juice / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000209:etiology*; D013315:Stress, Psychological
D001789:Blood Group Antigens