title: A comparative study of Butacote and naproxen in ankylosing spondylitis.
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D009288:Naproxen / Q000008:administration & dosage / Q000627:therapeutic use*; D010653:Phenylbutazone / Q000008:administration & dosage / Q000627:therapeutic use*; D013167:Spondylitis, Ankylosing / Q000188:drug therapy*; D013608:Tablets, Enteric-Coated
chemical_list: D013608:Tablets, Enteric-Coated; D009288:Naproxen; D010653:Phenylbutazone