1Department of Pediatrics and Children’s Cancer Research Center, School of Medicine, Kinderklinik München Schwabing, Technical University of Munich, Munich, Germany
2Pediatrics III, West German Cancer Centre Essen, University Hospital Essen, Essen, Germany
3Department of Pediatric Oncology, Hematology and Immunology, Olgahospital, Stuttgart, Germany
4Department of Pediatric Hematology—Oncology and Hematopoietic Stem Cell Transplantation, Hospital Infantil Universitario Niño Jesus, Madrid, Spain
5Department of Pediatric Hematology, Oncology and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
6Raisa Gorbacheva Memorial Institute for Pediatric Oncology, Hematology and Transplantat, Pavlov First St. Petersburg State Universityion, St. Petersburg, Russia
7Department of Pediatric Hematology and Oncology, Universitätsklinikum Frankfurt, Frankfurt, Germany
8Department of Pediatric Hematology and Oncology, Ospedale S Orsola Malpighi, Bologna, Italy
9Department of Pediatrics, Jena University Hospital, Jena, Germany
10Department of Pediatric Hematology and Oncology, Universitätsklinikum Münster, Münster, Germany
11Department of Pediatric Hematology and Oncology, Universitätsklinikum Tübingen, Tübingen, Germany
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