title: Letter: Naproxen (Naprosyn) and gastrointestinal haemorrhage.
mesh_terms: D000368:Aged; D000700:Analgesics / Q000009:adverse effects*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced*; D006801:Humans; D008551:Melena / Q000139:chemically induced; D008738:Methyl Ethers / Q000009:adverse effects; D008875:Middle Aged; D009281:Naphthalenes / Q000009:adverse effects; D010003:Osteoarthritis / Q000188:drug therapy; D011422:Propionates / Q000009:adverse effects*
chemical_list: D000700:Analgesics; D008738:Methyl Ethers; D009281:Naphthalenes; D011422:Propionates