1. Department of Pediatric Rheumatology and Laboratory of Translational Immunology, University Medical Centre Utrecht, Utrecht, The Netherlands
2. Department of Internal Medicine Hospices Civils de Lyon, Croix-Rousse Hospital, Lyon, France
3. Pediatric Immunology-Hematology and Rheumatology Unit, RAISE Rare Disease Reference Centre, IMAGINE Institute, Necker Hospital, Assistance Publique Hôpitaux de Paris, Paris, France
4. Université Paris-Descartes, Paris, France
5. Sobi, Stockholm, Sweden
6. Department of Rheumatology, AP-HP Pitié-Salpêtrière Hospital, Paris, France
7. Division of Rheumatology, Ospedale Pediatrico Bambino Gesù, Rome, Italy