1. Hamburg Centre for Pediatric and Adolescent Rheumatology Schön Klinik Hamburg Eilbek Hamburg Germany
2. German Rheumatism Research Center Berlin Germany
3. Department of Pediatric Rheumatology Cerrahpasa Medical School Istanbul University ‐ Cerrahpasa Istanbul Turkey
4. Universidade Federal de São Paulo Sao Paulo Brazil
5. Riga Stradins University Department of Pediatric University Children Hospital Riga Latvia
6. Universidade do Estado Rio de Janeiro Brazil
7. Pediatric Rheumatology Hospital Sant Joan de Déu, Esplugues (Barcelona) Universitat de Barcelona Spain
8. SickKids The Hospital for Sick Children Toronto Canada
9. National Medical Research Center of Children's Health Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation Moscow Russian Federation
10. Hospital de Pediatria J.P Garrahan Buenos Aires Argentine
11. Department of Internal Medicine Ghent University, Department of Rheumatology, Ghent University Hospital; Unit for Molecular Immunology and Inflammation, VIB Inflammation Research Center (IRC) Ghent Belgium
12. University Children's Hospital University Medical Center Ljubljana Ljubljana Slovenia
13. Meyer Children’s Hospital Florence Italy
14. Saint‐Petersburg State Pediatric Medical University Saint‐Petersburg Russia
15. Hospital for Special Surgery New York NY USA
16. University Hospital Ramón y Cajal Madrid Spain
17. Children’s Hospital at Montefiore Bronx NY USA
18. School of Medical Science University of Campinas Sao Paulo Brazil
19. Pediatric Rheumatology Sri Ramachandra University Chennai India
20. University Tuebingen, Pediatric Rheumatology Tuebingen Germany
21. Charles University Prague Czech Republic
22. University of Missouri‐Columbia Columbia USA
23. Serviço de Reumatologia Hospital Garcia de Orta Almada Portugal
24. Sir Ganga Ram Hospital Delhi Delhi India
25. Emma Children’s Hospital Amsterdam University Medical Centers University of Amsterdam Amsterdam The Netherlands
26. Hospital de Niños Dr Orlando Alassia Santa Fe Argentine
27. Dept. of Women’s and Children’s Health Uppsala University Uppsala Sweden
28. Hospital Universitário Clementino Fraga Filho (HUCFF) Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil
29. Medical University Innsbruck; Department of Pediatrics, Pediatric Rheumatology Innsbruck Austria
30. Pediatrics Department Hospital de Santa Maria, Faculdade de Medicina, Universidade de Lisboa Lisbon Portugal
31. Great Ormond Street Hospital for Children NHS Foundation Trust London UK
32. Schneider Children's Medical Center of Israel Sackler Faculty of Medicine Tel Aviv University Petah‐Tikva Israel
33. Asklepios Klnik Sankt Augustin Sankt Augustin Germany
34. Luzerner Kantonsspital Kinderspital, Luzern Switzerland
35. Charité University Medicine and German Rheumatism Research Center Berlin Berlin Germany
36. Dept of Pediatric Rheumatology and Immunology Clinical Center Nis Faculty of Medicine University of Niš Nis Serbia
37. Rigshospitalet, Copenhagen Denmark
38. Stony Brook Children's Hospital Stony Brook NY USA
39. Pediatric Rheumatology Unit Meir Medical Center, Kfar Saba, Sackler School of Medicine, Tel Aviv University Tel Aviv Israel
40. University of Pittsburgh Children’s Hospital of Pittsburgh Pittsburgh PA USA