Epidemiological study of peptic ulcer in the south of India. Observations from Madras on the changing incidence of peptic ulcer, with special reference to causation.
D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D000375:Aging; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000453:epidemiology* / Q000209:etiology*; D012723:Sex
D000017:ABO Blood-Group System; D001789:Blood Group Antigens