Harmonizing Pain Outcome Measures: Results of the Pre-OMERACT Meeting on Partnerships for Consensus on Patient-important Pain Outcome Domains Between the Cochrane Musculoskeletal Group and OMERACT

From the Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA; Cardiff University, Cardiff, UK; Swedish Medical Center and University of Washington, Seattle, Washington, USA; SDG LLC, Cambridge, Massachusetts, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and National Institute for Health Research (NIHR) Leeds Musculoskeletal Biomedical Research Unit, Leeds, UK; University of Alabama at Birmingham, Birmingham, Alabama; Division of Immunology/Rheumatology, Stanford University, Palo Alto, California, USA; University Hospital Carl Gustav Carus, Dresden, Germany; Universite Pierre et Marie Curie and APHP, Department of Rheumatology, Pitie-Salpetriere Hospital, Paris, France; EMGO Institute for Health and Care Research, Department of Health Sciences, VU University, and Department of Epidemiology and Biostatistics, VU University Medical Center, VU Medical Center, Amsterdam, The Netherlands.