1. Hamburger Zentrum für Kinder- und Jugendrheumatologie, Schoen Clinic, Hamburg-Eilbek, Germany
2. Department of Woman’s and Child’s Health, University of Padova, Padua, Italy
3. Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
4. Department of Allergy, Rheumatology and Clinical Immunology, University Children’s Hospital, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
5. Clinical and Academic Paediatric and Adolescent Rheumatology Unit, Alder Hey Children’s NHS Foundation Trust, Liverpool, UK
6. Rheumatology, Women’s and Children’s Hospital, University of Adelaide, Adelaide, Australia
7. Rheumatology, The Children's Hospital Westmead, Australia, Sydney
8. 2nd Department of Pediatrics, Semmelweis Hospital, Budapest, Hungary
9. Department of Pediatrics, Cerrahpasa Medical School, Istanbul University-Cerrahpasa, Istanbul, Turkey
10. Pediatric Rheumatology Unit, Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
11. Centre for Adolescent Rheumatology, Institute of Child Health University College London, London, UK
12. Paediatric Immunology and Rheumatology, Wilhelmina Children's Hospital, Utrecht, The Netherlands
13. Department of Paediatrics, Faculdade de Medicina de Botucatu, Sao Paulo, Brazil
14. Department of Paediatric Rheumatology, Wilhelmina Children's Hospital, Utrecht, The Netherlands
15. The European Reference Network RITA