WORKING GROUPS Α/ΑWORKING GROUPS:NATIONAL COORDINATOR 1Acute Lymphoblastic Leukemia HeSPHO Working Group (ALL-HeSPHO-WG) S. Polychronopoulou 2Acute Lymphoblastic Leukemia-Relapse HeSPHO Working Group (ALL-Relapse HeSPHO-WG)S. Polychronopoulou 3National Acute Myeloblastic Leukemia Working GroupS. Polychronopoulou 4Hellenic Working Group on Myelodysplastic Syndromes (MDS) / Juvenile Myelomonocytic Leukemia (JMML) / Severe Aplastic Anemia (SAA) in childhood S. Polychronopoulou 5 Chronic Myeloid Leukemia HeSPHO Working Group (CML-HeSPHO-WG) M. Ampatzidou 6Hodgkin Lymphoma Working Group E. Chatzipantelis 7Non-Hodgkin Lymphoma Working Group G. Avgerinou 8Transplantation and Cell Therapies Working Group E. Gousetis 9Genetic Predispodition Working GroupA. Kattamis 10Brain Tumors Working Group A. Kattamis 11Neuroblastoma Working Group V. Papadakis 12Renal Tumor Study Group (HeSPHO-RTSG) D. Doganis 13Soft Tissue Sarcomas Working Group A. Pourtsidis 14Working group of Ewing Sarcoma of HeSPHO N. Katzilakis 15Osteosarcoma Working Group (OWG) E. Papakonstantinou 16Liver Tumors Working Group M. Servitzoglou 17Germ Cells Working Group )E. Rigatou 18Very Rare Tumors Working Group A. Pourtsidis 19Supportive Care Working Group M. Kourti 20Late Effect Working Group H. Kosmidis 21Infection Working Group (IWG) A. Tragiannidis 22Vascular Anomalies Working Group S. Intzes 23Histiocytoses Working Group V. Papadakis 24Adolescent and Young Adults (AYA) Working Group Adolescent and Young Adults (AYA) Working Group 25Young Paediatricians Haematologists Oncologists Working Group V. Tzotzola ΠΛΑΙΣΙΟ ΛΕΙΤΟΥΡΓΙΑΣ ΟΜΑΔΩΝ ΕΡΓΑΣΙΑΣ ΤΗΣ ΕΕΠΑΟ