title: [Blood groups and peptic ulcer].
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D000368:Aged; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000097:blood*
chemical_list: D000017:ABO Blood-Group System; D001789:Blood Group Antigens
vernacular_title: Gruppy krovi i iazvennaia bolezn.