title: Gastric ulcer, ABO blood group and acid secretion.
mesh_terms: D000017:ABO Blood-Group System; D005260:Female; D005750:Gastric Juice / Q000378:metabolism*; D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D008297:Male; D013276:Stomach Ulcer
chemical_list: D000017:ABO Blood-Group System