title: Efficacy and safety of anti-TNF therapies in psoriatic arthritis: an observational study from the British Society for Rheumatology Biologics Register.
authors.affiliation: School of Pharmacy and Pharmaceutical Sciences.
authors.forename: Amr A
authors.initials: AA
authors.lastname: Saad
authors.affiliation: School of Pharmacy and Pharmaceutical Sciences.
authors.forename: Darren M
authors.initials: DM
authors.lastname: Ashcroft
authors.affiliation: Arthritis Research Campaign (ARC) Epidemiology Unit, University of Manchester, Manchester, UK.
authors.forename: Kath D
authors.initials: KD
authors.lastname: Watson
authors.affiliation: Arthritis Research Campaign (ARC) Epidemiology Unit, University of Manchester, Manchester, UK.
authors.forename: Deborah P M
authors.initials: DPM
authors.lastname: Symmons
authors.affiliation: School of Pharmacy and Pharmaceutical Sciences.
authors.forename: Peter R
authors.initials: PR
authors.lastname: Noyce
authors.affiliation: Arthritis Research Campaign (ARC) Epidemiology Unit, University of Manchester, Manchester, UK.
authors.forename: Kimme L
authors.initials: KL
authors.lastname: Hyrich