1. Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation
2. B.V. Petrovsky National Scientific Center of Surgery
3. Moscow City Oncology Hospital No. 62 of the Department of Health of Moscow
4. Russian Children’s Clinical Hospital of the N.I. Pigorov Russian National Research Medical University of Ministry of Healthcare of the Russian Federation
5. N.N. Blokhin National Medical Research Center of Oncology of Ministry of Healthcare of the Russian Federation