1. Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg
2. Department of Stem Cell Transplantation, St. Anna Children’s Hospital, Medical University of Vienna, Vienna, Austria
3. Department of Pediatrics, University Hospital Schleswig-Holstein, Campus Kiel, Kiel
4. Department of Medicine, Division of Hematology, University Hospital Basel, Basel, Switzerland
5. Institute of Pathology, Klinikum Kaufbeuren-Ravensburg, Kaufbeuren
6. Institute of Pathology, University Hospital Erlangen, Erlangen
7. Department of Padiatrische Hamatologie und Onkologie, Zentrum fur Kinderheiikunde der Justus-Liebig-Universitat Giessen, Giessen
8. Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt am Main
9. Department of Hematology/Oncology and General Pediatrics, Children’s University Hospital, University of Tübingen, Tübingen
10. Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover
11. Department of Pediatrics, Johannes Wesling Klinikum Minden, Ruhr-University Bochum, Minden
12. Center for Pediatric Palliative Care, Dr von Hauner Children’s Hospital, University of Munich, Munich, Germany