[Distribution of blood groups in patients with peptic ulcer].
D001789:Blood Group Antigens; D004381:Duodenal Ulcer / Q000276:immunology*; D006801:Humans; D010437:Peptic Ulcer / Q000276:immunology*
D001789:Blood Group Antigens
Raspredelenie grupp krovi u bol'nykh iazvennoĭ bolezn'iu.