| 1 (585) | National Institute of Public Health, Czech Republic | CZE |  |
| 2 (791) | Russian Academy of Medical Sciences | RUS | |
| 3 (936) | Russian Medical Academy of Continuous Professional Education | RUS | |
| 4 (1052) | I. Mechnikov Research Institute of Vaccines and Sera of the Russian Academy of Medical Sciences | RUS | |
| 5 (1092) | Institute of Epidemiology and Microbiology of the Russian Academy of Medical Sciences | RUS | |
| 6 (1095) | Federal Medical Biological Agency * | RUS | |
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