1. Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia
2. Institute of Microbiology and Virology, Riga Stradins University, Ratsupites 5, LV-1067 Riga, Latvia
3. City Multiprofile Hospital No. 2, Ministry of Health of the Russian Federation, 194354 St. Petersburg, Russia