1. Department of Pediatric Hemato-Oncology, Rambam Health Care Campus, Haifa, Israel
2. Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway
3. Department of Paediatrics, Queen Silvia Children’s Hospital, Institution for Clinical Sciences, Gothenburg, Sweden
4. Department of Pediatric Hemato-Oncology, Hospital Universitario y Politécnico La Fe, Valencia, Spain
5. Department of Pediatrics, Queen Mary Hospital, Hong Kong Pediatric Hematology & Oncology Study Group (HKPHOSG), Hong Kong
6. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
7. Departament of Paediatrics, Instituto Português de Oncologia, FG-Porto, Portugal
8. Department of Paediatrics, Ghent University Hospital, Ghent, Belgium
9. Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
10. Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
11. Childhood Cancer Centre, Skåne University Hospital, Lund, Sweden
12. Department of Pediatrics, Landspitali University Hospital, Reykjavík, Iceland
13. Department of Paediatrics, Children’s Clinical University Hospital, Riga, Latvia
14. Department of Paediatrics and Adolescent Medicine, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
15. Pediatric Department, Women and Children’s Division, Oslo University Hospital, Oslo, Norway
16. Department of Pediatrics, Umeå University Hospital, Umeå, Sweden
17. Department of Woman’s and Children’s Health, Uppsala University, Uppsala, Sweden
18. Center of Oncology and Hematology, BMT unit, Vilnius University Children’s Hospital, Vilnius, Lithuania
19. Department of Paediatrics, SA Tallinna Lastehaigla, Tallinn, Estonia
20. Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands
21. Emma Children’s Hospital, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands