1. University of Michigan Scleroderma Program, Ann Arbor, Michigan - USA
2. University of California, Los Angeles (UCLA), Los Angeles, California - USA
3. Paris Descartes University, Rheumatology A Department, Cochin Hospital, Paris - France
4. Department of Medicine, McGill University, Division of Rheumatology, Jewish General Hospital, Montréal - Canada
5. Department of Immunology and Rheumatology, University of Pécs, Pécs - Hungary
6. Division of Rheumatology, University Hospital Zurich, Zurich - Switzerland
7. Hamburger Zentrum für Kinder und Jugendrheumatologie, Hamburg - Germany
8. Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo - Japan
9. Department of Experimental and Clinical Medicine, Division of Rheumatology AOUC, University of Florence, Florence - Italy
10. University of Texas McGovern Medical School, Houston, Texas - USA
11. University of Pittsburgh, Pittsburgh, Pennsylvania - USA
12. University of Pennsylvania, Philadelphia, Pennsylvania - USA
13. Deparment of Medicine, University of Western Ontario, London, Ontario - Canada
14. Scleroderma Research Consultants LLC, Litchfield, Connecticut - USA
15. Georgetown University, Washington DC - USA
16. Division of Rheumatology, St. Vincent's Hospital, Melbourne - Australia
17. Centre for Rheumatology, Royal Free and University College London Medical School, London - UK