1. Department of Pediatric Rheumatology and Immunology University Children's Hospital Muenster Muenster Germany
2. Department of Gastroenterology, Hepatology, Endocrinology and Clinical Infectiology University Hospital Muenster Muenster Germany
3. Department of General Pediatrics University Children's Hospital Muenster Muenster Germany
4. Laboratory of Translational Research, Centre Hospitalier Universitaire Brugmann Université Libre de Bruxelles, Brussels, Belgium and Medical Biology Department, Laboratoire National de Santé Dudelange Luxembourg
5. Immunology Department, LHUB‐ULB Université Libre de Bruxelles Brussels Belgium
6. Laboratory of Translational Research Centre Hospitalier Universitaire Brugmann and Immunology Department LHUB‐ULB, Université Libre de Bruxelles Brussels Belgium
7. Aix Marseille Université CNRS INSERM CIML and Assistance Publique des Hôpitaux de Marseille Hôpital de la Timone, Immunology, Marseille Immunopole Marseilles France
8. Assistance Publique‐Hôpitaux de Marseille Centre Hospitalier Universitaire Conception Service de Médecine Interne et Immunologie Clinique Aix‐Marseille Universitô and Center for Cardiovascular Research and Nutrition Aix‐Marseille Université, INSERM UMRS1263 Marseilles France
9. Division of Rheumatology Department of Medicine, University Hospital of GenevaDepartment of Medicine, University Hospital of Geneva University of Geneva Geneva Switzerland