1. Research Institute of Pediatric Oncology and Hematology of N.N. Blokhin National Medical Research Centre of Oncology, Ministry of Health of Russia
2. Russian Children’s Clinical Hospital of the N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia
3. Central State Medical Academy of the Administrative Department of the President of the Russian Federation
4. Research Institute of Pediatric Oncology and Hematology of N.N. Blokhin National Medical Research Centre of Oncology, Ministry of Health of Russia; I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University)