1 Division of Pediatric Hematology-Oncology, First Department of Pediatrics, "Aghia Sophia" Children's Hospital, Full Member of ERN GENTURIS and ERN EUROBLOODNET, National and Kapodistrian University of Athens, Athens, Greece.
2 Department of Internal Medicine, University of Patras Medical School, Patras, Greece.
3 Department of CT and MRI, "Aghia Sophia" Children's Hospital, Athens, Greece.
4 Pediatric Neurology Unit, First Department of Pediatrics, "Aghia Sophia" Children's Hospital, National and Kapodistrian University of Athens, Athens, Greece.