Development of a Provisional Core Domain Set for Polymyalgia Rheumatica: Report from the OMERACT 12 Polymyalgia Rheumatica Working Group

From the Department of Primary Care Sciences, Keele University, Staffordshire, UK; Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center, Groningen, The Netherlands; Department of Rheumatology, Leeds Teaching Hospitals ( UK) National Health Service (NHS) Trust, Leeds, UK; Department of Rheumatology Ashford and St. Peter’s Hospitals NHS Foundation Trust, Chertsey, Surrey, UK; Rheumatology Unit, The Queen Elizabeth Hospital, University of Adelaide, Woodville, South Australia; PMR-GCA Scotland, Forest Lodge, Foulden, Berwickshire, UK; University of the West of England, Academic Rheumatology Unit, Bristol Royal Infirmary, Bristol, UK; SDC LLC, Cambridge, Massachusetts, USA; Department of Primary Care Sciences, Keele University, Staffordshire, UK; Departments of Epidemiology and Biostatistics, and Rheumatology, VU University Medical Center, Amsterdam, The Netherlands; University of Bristol, Academic Rheumatology Unit, Bristol Royal Infirmary, Bristol, UK; UK National Institute for Health Research (NIHR)-Leeds Biomedical Research Unit, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.