1. Department of Pediatric Hematology/Oncology, University Children’s Hospital Tübingen, Tübingen, Germany;
2. Department of Hematology/Oncology, University Hospital Tübingen, Tübingen, Germany;
3. St. Anna Children’s Hospital Wien, Wien, Austria;
4. Department of Pediatric Hematology/Oncology, University Children’s Hospital Frankfurt, Frankfurt, Germany;
5. Department of Pediatric Hematology/Oncology, Dr. von Haunersches Kinderspital Munich, Munich, Germany;
6. Department of Pediatric Hematology/Oncology, Medizinische Hochschule Hannover, Hannover, Germany;
7. Department of Pediatric Oncology/Hematology, University Hospital Heidelberg, Heidelberg, Germany;
8. Department of Hematology, University Hospital Würzburg, Würzburg, Germany;
9. Department of Pediatric Hematology/Oncology, University Children’s Hospital Würzburg, Würzburg, Germany;
10. Clinic of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany;
11. Department of Pediatric Hematology/Oncology, University Children’s Hospital Essen, Essen, Germany;
12. Department of Pediatric Hematology and Oncology, University Children’s Hospital Münster, Münster, Germany;
13. Department of Pediatrics, Jena University Hospital, Jena, Germany; and
14. German Center for Infection Research, Ludwig Maximilians University Munich, Munich, Germany