title: Long-term survival of patients with gastrointestinal haemorrhage with special reference to the ABO blood groups.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000401:mortality; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000401:mortality*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000401:mortality; D011379:Prognosis
chemical_list: D000017:ABO Blood-Group System