1. Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, Academic Medical Center, Amsterdam, The Netherlands
2. Central Research Institute of Epidemiology, Moscow, Russia
3. Izhevsk State Medical Academy, Izhevsk, Russia
4. Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products, Russian Academy of Sciences, Moscow, Russia
5. Izmerov Research Institute of Occupational Health, Moscow, Russia
6. St. Petersburg Pasteur Institute of Epidemiology and Microbiology, Saint Petersburg, Russia
7. Amsterdam Infection & Immunity Institute, Amsterdam University Medical Centers, Academic Medical Center, Amsterdam, The Netherlands