1. Division of Pediatric Hematology and Oncology, Department of Pediatrics, University of Pécs Medical School, József A. Street 7, 7623 Pécs, Hungary
2. Institute of Behavioural Sciences, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
3. Pediatric Center, Semmelweis University, Tűzoltó utca 7–9, 1094 Budapest, Hungary
4. Velkey László Child’s Health Center, Borsod-Abaúj-Zemplén County Central Hospital and University Teaching Hospital, Szentpéteri kapu 72–76, 3526 Miskolc, Hungary
5. Department for Pediatric Hematology and Hemopoietic Stem Cell Transplantation, Central Hospital of Southern Pest, National Institute of Hematology and Infectious Diseases, 1097 Budapest, Hungary
6. Hemato-Oncology Unit, Heim Pál National Pediatric Institute, 1089 Budapest, Hungary
7. Department of Pediatrics, University of Szeged, 6720 Szeged, Hungary
8. Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
9. Institute of Bioanalysis, University of Pécs, 7624 Pécs, Hungary