1. Division of Rheumatology, Department of Medicine, University of Alberta Hospital, Edmonton, Alberta, Canada
2. Department of Rheumatologic and Immunologic Disease, Cleveland Clinic, Cleveland, Ohio
3. Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
4. Division of Rheumatology, Department of Medicine, Inflammation and Immunity Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts