["A", "B" and "O" blood groups and their relation to gastric and duodenal ulcer and gastric cancer].
D001789:Blood Group Antigens; D004381:Duodenal Ulcer; D006801:Humans; D009369:Neoplasms; D013274:Stomach Neoplasms / Q000097:blood*
D001789:Blood Group Antigens
BLOOD GROUPS; STOMACH NEOPLASMS/blood