Updating the Psoriatic Arthritis (PsA) Core Domain Set: A Report from the PsA Workshop at OMERACT 2016

From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Department of Dermatology, University of Utah, Salt Lake City, Utah; Quintiles, Duke University School of Medicine, Durham, North Carolina; Division of Immunology, Stanford University, Palo Alto, California; Cleveland Clinic, Cleveland, Ohio; University of Pennsylvania, Philadelphia, Pennsylvania, USA; VU Medical Centre, Amsterdam; Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; Royal National Hospital for Rheumatic Diseases; Royal National Hospital for Rheumatic Diseases, Bath; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals UK National Health Service (NHS) Trust, Leeds, UK; Toronto Western Hospital; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network; Women’s College Research Institute, Women’s College Hospital, University of Toronto, Toronto; Ottawa Hospital Research Institute, School of Epidemiology, Public Health and Preventative Medicine, University of Ottawa, Ottawa, Ontario, Canada; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d’Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; The Parker Institute, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Department of Internal Medicine, Division of Rheumatology, Hacettepe University, Ankara, Turkey.