L.Yu. Krivonogov1, I.S. Inomboev2, J.P. Cheban3
1,2 Penza State University (Penza, Russia)
3 Penza Regional Clinical Hospital named after N.N. Burdenko (Penza, Russia)
1 leonidkrivonogov@yandex.ru, 2 ilhomdzoninomboev@gmail.com, 3 petrunina_julija@inbox.ru