1. Division of Rheumatology, Brigham and Women’s Hospital, Boston, MA, USA
2. Division of General Medicine, Brigham and Women’s Hospital, Boston, MA, USA
3. Division of Rheumatology, Yale School of Medicine, West Haven Veterans Affairs Health System, New Haven, CT, USA
4. Department of Orthopaedics and Physical Rehabilitation, University of Massachusetts Medical School, Worcester, MA, USA
5. Division of Rheumatology, University of Vienna, Vienna, Austria