title: Analgesic intake and chronic gastric ulcer. Acute upper gastrointestinal haemorrhage, personality traits and social class.
mesh_terms: D000208:Acute Disease; D000700:Analgesics / Q000008:administration & dosage; D002908:Chronic Disease; D005260:Female; D006471:Gastrointestinal Hemorrhage; D006801:Humans; D008297:Male; D010551:Personality; D012008:Recurrence; D012923:Social Class; D013276:Stomach Ulcer
chemical_list: D000700:Analgesics