1. Department of Pediatric Pneumology and Immunology, Charité Campus Virchow-Klinikum, Universitaetsmedizin Berlin, Berlin, Germany
2. Department of Pediatrics, University Hospital Rostock, Rostock, Germany
3. Department of Pediatric Oncology, Hematology and Immunology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
4. Department of Infectious Diseases and Immunology, Children's University Hospital, Munich, Germany
5. Department of Pediatrics, University of Duisburg-Essen, Duisburg, Germany
6. Pharmakovigilanz und Beratungszentrum für Embryonaltoxikologie, Berliner Betrieb für Zentrale Gesundheitliche Aufgaben, Berlin, Germany
7. Department of Molecular Medicine, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
8. Cerrahpasa Faculty of Medicine, University of Istanbul, Cerrahpasa, Turkey
9. Department of Pediatric Nephrology and Rheumatology, Faculty of Medicine, Hacettepe University, Ankara, Turkey