Comparative study of operated cases of peptic ulcer in Madras in the 1940s and 1960s.
D000367:Age Factors; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D008297:Male; D010437:Peptic Ulcer / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D010438:Peptic Ulcer Hemorrhage; D010439:Peptic Ulcer Perforation; D012737:Sex Factors
D001789:Blood Group Antigens