title: Letter: Penicillamine in ankylosing spondylitis.
mesh_terms: D000328:Adult; D004341:Drug Evaluation; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010396:Penicillamine / Q000008:administration & dosage / Q000627:therapeutic use*; D013167:Spondylitis, Ankylosing / Q000188:drug therapy*
chemical_list: D010396:Penicillamine