1. Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russian Federation
2. Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russian Federation; Russian Children's Clinical Hospital, Oncology Unit of Surgical Methods “Pirogov Russian National Research Medical University of the Ministry of Healthcare of the Russian Federation”