title: GASTRIC ULCERS, BLOOD GROUPS, AND ACID SECRETION.
mesh_terms: D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D005750:Gastric Juice; D006801:Humans; D013223:Statistics as Topic; D013276:Stomach Ulcer; D006113:United Kingdom
chemical_list: D000017:ABO Blood-Group System; D001789:Blood Group Antigens
keywords: ABO FACTORS; GASTRIC JUICE; GREAT BRITAIN; STATISTICS; STOMACH ULCER