title: Limiting phenylbutazone prescriptions to card-carrying patients.
mesh_terms: D011307:Drug Prescriptions; D006801:Humans; D010653:Phenylbutazone / Q000008:administration & dosage*; D013167:Spondylitis, Ankylosing / Q000188:drug therapy; D006113:United Kingdom
chemical_list: D010653:Phenylbutazone