B. Avramova1, D. Avdzhieva2, M. Spasova3, M. Belchev4, A. Todorova5, T. Todorov5,
G. Hadzhidekov6, V. Bozhinova7, A. Hadzhiyanev8, M. Yordanova1, H. Shivachev9, I.
Tarnev10, M. Penkov8, V. Kaleva11, I. Litvinenko12
1 Clinic of Pediatric Clinical Hematology and Oncology, UMHAL “Tsaritsa Yoanna”- ISUL, Sofia
2 Department of Clinical Genetics, SBALDB “Ivan Mitev” – Sofia
3 Department of Pediatric Oncohematology, Clinic of Pediatrics, UMHAL “St. Georgi” – Plovdiv
4 Clinic of Pediatric Clinical Hematology and Oncology, UMHAL “St. Marina” – Varna
5 Medical-diagnostic Genetic Laboratory “Genika” – Sofia
6 Department of Imaging, UMHAL “Lozenets” – Sofia
7 Clinic of Nervous Diseases for Children, MHALNP “St. Naum” – Sofia
8 Clinic of Neurosurgery, UMHAL “St. Ivan Rilski” – Sofia
9 Clinic of Pediatric Surgery, UMHALSM “Pirogov” – Sofia
10 Clinic of Neurology, UMHAL “Aleksandrovska” – Sofia
11 Joint National Oncology Network
12 Clinic of Pediatric Neurology, SBALDB “Ivan Mitev” – Sofia