1. Schön Klinik Hamburg Eilbek Hamburg Germany
2. University of Pittsburgh and Children's Hospital of Pittsburgh Pittsburgh Pennsylvania
3. Hospital Sant Joan de Déu and Universitat de Barcelona Barcelona Spain
4. Indiana University School of Medicine and Riley Hospital for Children at IU Health Indianapolis
5. Semmelweis University Budapest Hungary
6. University of Colorado School of Medicine and Children's Hospital Colorado Aurora
7. University of Genoa and IRCCS San Martino Polyclinic Hospital Genoa Italy
8. Royal Free London NHS Foundation Trust London UK
9. Scleroderma & Raynaud's United Kingdom London UK
10. University of Milan, ASST G. Pini Milan Italy
11. Hackensack University Medical Center Hackensack New Jersey
12. Charles University Prague Czech Republic
13. Royal Free London London UK
14. Great Ormond Street Hospital London UK
15. Ghent University, Ghent University Hospital, VIB Inflammation Research Center, and ERN ReCONNET Ghent Belgium
16. Children's Hospital Research Institute and University of Washington, Seattle, and Janssen Pharmaceutical Companies of Johnson & Johnson Spring House Pennsylvania
17. German Rheumatism Research Center Berlin Germany
18. University of Michigan Ann Arbor
19. Hospital de Santa Maria, Faculdade de Medicina, and Universidade de Lisboa Lisbon Portugal
20. University of Leeds and Leeds Teaching Hospital Trust Leeds UK
21. Asklepios Klinik Nord–Heidberg Hamburg Germany
22. Cerrahpasa Medical School and Istanbul University–Cerrahpasa Istanbul Turkey
23. Alder Hey Children's Foundation NHS Trust Liverpool UK
24. IRCCSG Istituto G. Gaslini Genoa Italy
25. Chinese Organization for Scleroderma Chengdu City Sichuan Province China
26. University of California, Los Angeles, University of Washington, Seattle, and University of Florence Florence Italy