1. Privolzhsky Research Medical University, Ministry of Health Care of the Russian Federation; Nizhny Novgorod Regional Children’s Clinical Hospital
2. Nizhny Novgorod Regional Children’s Clinical Hospital
3. Privolzhsky Research Medical University, Ministry of Health Care of the Russian Federation
4. Nizhny Novgorod Scientific and Research Institute of Epidemiology and Microbiology named after Academician I.N. Blokhina, Federal Service on Surveillance for Consumer Rights Protection and Human Welfare (Rospotrebnadzor)