O. A. Egenov
N.N. Blokhin Russian Cancer Research Center, Ministry of Health of Russia
Russian Federation

 23 Kashirskoe Shosse, Moscow 115478, Russia 

A. S. Tjulandina
N.N. Blokhin Russian Cancer Research Center, Ministry of Health of Russia; I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia
Russian Federation

 23 Kashirskoe Shosse, Moscow 115478, Russia 

8–2 Trubetskaya St., Moscow 119991, Russia

E. A. Suleymanov
Ministry of Health of Chechen Republic
Russian Federation

4 Chekhova St., Grozniy 364061, Chechen Republic

I. S. Stilidi
N.N. Blokhin Russian Cancer Research Center, Ministry of Health of Russia; N.I. Pirogov Russian National Research Medical University, Ministry of Health of Russia
Russian Federation

 23 Kashirskoe Shosse, Moscow 115478, Russia 

1 Ostrovityanova St., Moscow 117997, Russia