1. City Hospital No 33; Privolzhsky Research Medical University
2. Privolzhsky Research Medical University
3. N.I. Lobachevsky National Research State University of Nizhny Novgorod
4. Academician I. N. Blokhina Nizhny Novgorod Scientific Research Institute of Epidemiology and Microbiology
5. City Hospital No 33; N.I. Lobachevsky National Research State University of Nizhny Novgorod
6. N.I. Lobachevsky National Research State University of Nizhny Novgorod; Academician I. N. Blokhina Nizhny Novgorod Scientific Research Institute of Epidemiology and Microbiology