I. N. Banin
Ministry of Health of the Voronezh Region
Russian Federation

 Igor N. Banin, candidate of medical sciences 

394006, Voronezh, Krasnoarmeyskaya st., 52d 

S. N. Cherkasov
Russian State Social University
Russian Federation

 Sergey N. Cherkasov, doctor of medical sciences 

129226, Moscow, Wilhelma Piecka st., 4, str. 1 

O. E. Konovalov
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

Oleg E. Konovalov, doctor of medical sciences, professor 

117198, Moscow, Miklukho-Maklaya st., 6 

V. I. Pak
Russian State Social University; Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

 Vitaly I. Pak, candidate of medical sciences 

129226, Moscow, Wilhelma Piecka st., 4, str. 1 

117198, Moscow, Miklukho-Maklaya st., 6 

A. L. Gorbunov
Russian State Social University
Russian Federation

 Aleksey L. Gorbunov, candidate of medical sciences 

129226, Moscow, Wilhelma Piecka st., 4, str. 1