1. Pediatric Hematology/Oncology Unit, First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, “Aghia Sοphia” Children’s Hospital, Athens, Greece
2. First Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, Eginition Hospital, Athens, Greece
3. Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, John Hopkins School of Medicine, Baltimore, Maryland, USA
4. Division of Endocrinology, Metabolism, and Diabetes, First Department of Pediatrics, University of Athens Medical School, “Aghia Sophia” Children’s Hospital, Athens, Greece