1 Department of Pediatric Hematology and Oncology, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria.
2 Division of Hematology and Oncology, Department of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada.
3 Division of Pediatric Hematology and Oncology, Department of Pediatrics, Weill Cornell Medical College, New York, NY.
4 Northern Institute for Cancer Research, Newcastle University, Newcastle, United Kingdom.
5 Department of Pediatric Hematology and Oncology, University of Münster, Münster, Germany.
6 Pediatric Hematology-Oncology Research Laboratory and Pediatric Hematology-Oncology Unit, Division of Pediatrics, Department Woman-Mother-Child, Lausanne University Hospital, Lausanne, Switzerland.
7 Department of Pediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong.
8 Center for Cancer and Blood Disorders, Children's National Medical Center, The George Washington University, Washington, DC.
9 Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Minsk, Belarus.
10 Center for Cancer and Blood Disorders, Phoenix Children's Hospital, Phoenix, AZ.
11 Division of Pediatrics, Hematology, and Oncology, University Medical Center Ljubljana, Ljubljana, Slovenia.
12 Department of Pediatric Hematology and Oncology, Charles University and University Hospital Motol, Prague, Czech Republic.
13 Telethon Kids Cancer Centre, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.
14 Department of Pediatric Hematology and Oncology, University Children's Hospital, School of Medicine, University of Belgrade, Belgrade, Serbia.
15 Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands.
16 Department of Pediatric Hematology and Oncology, Federal Center for Pediatric Hematology, Oncology, and Immunology, Moscow, Russia.
17 Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan.
18 Department of Pediatric Hematology and Oncology, University of Padova, Padova, Italy.
19 Department of Oncology, "P. & A. Kyriakou" Children's Hospital, Athens, Greece.
20 Department of Pediatric and Adolescent Oncology, Gustave-Roussy Cancer Center, Paris-Sacaly University, Villejuif, France.
21 Department of Pediatric Oncology and Hematology, Yerevan State Medical University, and Pediatric Cancer and Blood Disorders Center of Armenia, Yerevan, Armenia.
22 Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium.
23 Department of Pediatric Hematology and Oncology, University Hospital of Valencia, Valencia, Spain.
24 Department of Pediatric Hematology and Oncology, University Hospital Hamburg-Eppendorf, Hamburg, Germany; and.
25 Bone Marrow Transplantation and Pediatric Hematology and Oncology, Wroclaw Medical University, Wroclaw, Poland.