1. Privolzhsky Research Medical University (Nizhny Novgorod, Russia)
2. Privolzhsky Research Medical University; Academician I.N. Blokhina Nizhny Novgorod Scientific Research Institute of Epidemiology and Microbiology (Nizhny Novgorod, Russia)
3. Academician I.N. Blokhina Nizhny Novgorod Scientific Research Institute of Epidemiology and Microbiology (Nizhny Novgorod, Russia)