A.P. Astashchenko1, E.V. Dorokhov2, E.R. Orekhova3

1–3 FSBEI HE «N.N. Burdenko Voronezh State Medical University»
of the Ministry of Healthcare of the Russian Federation (Voronezh, Russia)

1 cercea1@rambler.ru, 2 dorofov@mail.ru, 3 lizzka413@gmail.com