1. Division of Rheumatology Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
2. Department or Pediatrics University of Utah Salt Lake City Utah USA
3. The University of Texas Health Science Center at Houston Houston Texas USA
4. Division of Rheumatology Vagelos College of Physicians and Surgeons Columbia University Irving Medical Center New York New York USA
5. Division of Rheumatology Department of Medicine and Dermatology Stanford University and Palo Alto Veterans Affairs Health Care System Stanford California USA
6. Division of Rheumatology Department of Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA
7. Scleroderma Research Foundation San Francisco California USA
8. Division of Rheumatology Department of Internal Medicine University of Utah and Salt Lake Veterans Affair Medical Center Salt Lake City Utah USA
9. Hospital for Special Surgery New York New York USA
10. Division of Rheumatology and Immunology Medical University of South Carolina Charleston South Carolina USA
11. Division of Rheumatology Department of Medicine Johns Hopkins University School of Medicine Baltimore Maryland USA
12. University of Michigan Scleroderma Program Ann Arbor Michigan USA
13. Division of Rheumatology University of Pennsylvania Philadelphia Pennsylvania USA
14. Division of Rheumatology The George Washington University School of Medicine and Health Sciences Washington District of Columbia USA
15. Georgetown University School of Medicine Washington District of Columbia USA