title: Parallel studies of stomach secretion and blood group in duodenal ulcer.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001789:Blood Group Antigens; D004381:Duodenal Ulcer / Q000097:blood / Q000235:genetics / Q000503:physiopathology*; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000378:metabolism*; D006801:Humans; D008875:Middle Aged
chemical_list: D001789:Blood Group Antigens