1. Russian Medical Academy of Continuing Postgraduate Education, Ministry of Health of Russia
2. Russian Medical Academy of Continuing Postgraduate Education, Ministry of Health of Russia; Research Institute of Pediatric Oncology and Hematology, N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia
3. Research Institute of Pediatric Oncology and Hematology, N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia