1. Vasculitis ClinicMount Sinai HospitalUniversity of Toronto Toronto Ontario Canada
2. Health Informatics InstituteUniversity of South Florida Tampa
3. University of California San Francisco
4. Cedars Sinai Medical Center Los Angeles California United States
5. McMaster University and St. Joseph’s Healthcare Hamilton Ontario Canada
6. University of Utah Hospital Salt Lake City
7. Cleveland Clinic Cleveland Ohio United States
8. University of Pennsylvania Philadelphia
9. University of Pittsburgh Pittsburgh Pennsylvania United States
10. Division of RheumatologyVeterans Affairs Boston Healthcare System Boston Massachusetts United States
11. Johns Hopkins University Baltimore Maryland United States
12. Mayo Clinic College of Medicine and Science Rochester Minnesota United States
13. Hospital for Special Surgery New York New York United States
14. University of Kansas Kansas City