1. Cincinnati Children’s Hospital Medical Center Cincinnati Ohio
2. Istituto Giannina Gaslini Pediatria II‐Rheumatologia PRINTO Genoa Italy
3. Andrzej Frycz Modrzewski Krakow University Krakow Poland
4. Hospital General de Niños Pedro de Elizalde Buenos Aires Argentina
5. Samara Regional Clinical Hospital Samara Russia
6. Hospital de Clínicas de Porto Alegre Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
7. Hospital General de México and Universidad Nacional Autónoma de México Mexico City Mexico
8. Hospital Universitario y Politécnico La Fe Valencia Spain
9. University of Toronto Toronto Ontario Canada
10. Hospital de Niños Ricardo Gutierrez Buenos Aires Argentina
11. Instituto Nacional de Salud del Niño Lima Peru
12. Joseph M. Sanzari Children’s Hospital and Hackensack Meridian School of Medicine Hackensack New Jersey
13. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Mexico City Mexico
14. Hôpital Cochin AP‐HP Université Paris‐Descartes Paris France
15. ZNA Jan Palfijn Antwerpen, Antwerp, Belgium, and University Hospital Ghent Belgium
16. Roche Products, Ltd. Welwyn Garden City UK
17. Genentech, Inc. San Francisco California
18. IRCCS Ospedale Pediatrico Bambino Gesù Rome Italy