title: Comment on: Efficacy and safety of anti-TNF therapies in psoriatic arthritis: an observational study from the British Society for Rheumatology Biologics Register.
authors.forename: Laura C
authors.initials: LC
authors.lastname: Coates
authors.forename: Philip S
authors.initials: PS
authors.lastname: Helliwell
mesh_terms: D018501:Antirheumatic Agents / Q000009:adverse effects*; D015535:Arthritis, Psoriatic / Q000188:drug therapy*; D006801:Humans; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors*
chemical_list: D018501:Antirheumatic Agents; D014409:Tumor Necrosis Factor-alpha