A. R. Volkova
Kazan State Medical University, Ministry of Health of Russia
Russian Federation

Post-Graduate Student of the Department of Pediatrics

49 Butlerova Str., Kazan, 420012, Republic of Tatarstan

Kh. M. Vakhitov
Kazan State Medical University, Ministry of Health of Russia
Russian Federation

Dr. of Sci. (Med.), Professor of Department of Pediatrics

49 Butlerova Str., Kazan, 420012, Republic of Tatarstan

E. V. Kumirova
Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Ministry of Health of Russia
Russian Federation

Dr. of Sci. (Med.), Pediatric Oncologist, Head of Department of Neurooncology

1 Samory Mashela St., Moscow, 11799