title: Do Biologic-treated Psoriatic Arthritis Patients with Spondylitis Respond Differently with or without Concomitant Methotrexate from Patients without Spondylitis?
authors.affiliation: Swedish Medical Center, Division of Rheumatology Research; University of Washington School of Medicine, Seattle, Washington, USA. pmease@philipmease.com.
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Mease
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use; D015535:Arthritis, Psoriatic / Q000188:drug therapy*; D001688:Biological Products / Q000627:therapeutic use; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000188:drug therapy
chemical_list: D018501:Antirheumatic Agents; D001688:Biological Products; D008727:Methotrexate