1. Division of HematologyUniversity Hospital BaselBaselSwitzerland
2. Department of Hematology–Bone Marrow TransplantationHospital Saint AntoineParisFrance
3. Florence Nightingale Sisli HospitalHematopoietic Stem Cell Transplantation UnitIstanbulTurkey
4. Ospedale San MartinoDepartment of Hematology IIGenovaItaly
5. St. Anna KinderspitalStem Cell Transplant UnitViennaAustria
6. Paediatric Hematology and EndocrinologyUniversity Children's HospitalTübingenGermany
7. Department of Hematology–Bone Marrow TransplantationHôpital St. Louis, ParisFrance