Letter: Naproxen follow-up.
D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009280:Naphthaleneacetic Acids / Q000627:therapeutic use*; D009288:Naproxen / Q000627:therapeutic use*
D009280:Naphthaleneacetic Acids; D009288:Naproxen