1. Pediatric Rheumatology, University Children′s Hospital, Essen, Germany
2. Human Genetics, Laboratory Medicine and Human Genetics, Singen, Germany
3. Pediatric Pneumology and Immunology, Charité University Medicine Berlin, Germany
4. Pediatric Rheumatology, Witten/Herdecke University Children’s Hospital, Datteln, Germany
5. Pediatric Rheumatology, Clementine Children’s Hospital, Frankfurt/Main, Germany
6. Pediatric Rheumatology and Immunology, University Children’s Hospital, Muenster, Germany
7. Pediatric Rheumatology, University Children’s Hospital, Hamburg, Germany
8. Department of Pediatric Oncology, Hematology and Clinical Immunology, Center of Child and Adolescent Health, Heinrich-Heine-University Duesseldorf, Germany
9. Pediatric Rheumatology, St. Marien’s Children’s Hospital, Landshut, Germany
10. Pediatric Immunology and Rheumatology, HELIOS Klinikum’s Hospital, Krefeld, Germany
11. Centre of Pediatric Rheumatology, Asklepios Clinic, St. Augustin, Germany
12. Pediatric Rheumatology, Ruhr-University Children’s Hospital, Bochum, Germany
13. German Center for Pediatric and Adolescent Rheumatology, Garmisch-Partenkirchen, Germany
14. Central Patient Admission/Emergency Department, Marienhospital, Herne, Germany
15. Pediatric Rheumatology Clinic, Hannover Medical School, Hannover, Germany
16. Pediatric Rheumatology, Westfaelisches Kinderzentrum, Dortmund, Germany