1. Vasculitis Clinic, Division of Rheumatology, Mount Sinai Hospital, University of Toronto, ON, Canada.
2. Division of Rheumatology, St. Joseph’s Health Care London Hospital, London, ON, Canada.
3. Department of Biostatistics, University of South Florida, Tampa, FL, USA.
4. Division of Rheumatology, McMaster University, Hamilton, ON, Canada.
5. Division of Rheumatology, University of Utah, Salt Lake City, UT, USA.
6. Division of Rheumatology, Cleveland Clinic, Cleveland, OH, USA.
7. Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, USA.
8. Division of Rheumatology, University of Ottawa, ON, Canada.
9. Division of Rheumatology, University of Pittsburgh, PA, USA.
10. Division of Rheumatology, Brigham and Women’s Hospital, Boston, MA, USA.
11. Division of Rheumatology, Johns Hopkins University, Baltimore, MD, USA.
12. Division of Pulmonary and Critical Care Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA.
13. Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, MN, USA.
14. Division of Rheumatology and Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, PA USA.
15. Vasculitis Clinic, Division of Rheumatology, Mount Sinai Hospital, University of Toronto, ON, Canada. christian.pagnoux@sinaihealthsystem.ca