| 1 (812) | Russian Academy of Medical Sciences | RUS |  |
| 2 (1651) | Motol University Hospital | CZE | |
| 3 (1794) | Institute of Epidemiology and Microbiology of the Russian Academy of Medical Sciences | RUS | |
| 4 (1818) | University General Hospital | CZE | |
| 5 (2025) | National Institute of Public Health, Czech Republic | CZE | |
| 6 (2062) | Ljubljana University Medical Centre | SVN | |
| 7 (2121) | Almazov National Medical Research Centre | RUS | |
| 8 (2199) | Institute of Experimental Medicine of the NorthWest Branch of the Russian Academy of Medical Sciences | RUS | |
| 9 (2241) | I. Mechnikov Research Institute of Vaccines and Sera of the Russian Academy of Medical Sciences | RUS | |
| 10 (2271) | Clinical Center of Serbia | SRB | |
| 11 (2313) | Clinical Hospital Merkur | HRV | |
| 12 (2375) | University Hospital Centre Zagreb | HRV | |
| 13 (2465) | University Hospital in Olomouc | CZE | |
| 14 (2481) | Hematological Scientific Centre of the Russian Academy of Medical Sciences | RUS | |
| 15 (2573) | University Hospital Brno | CZE | |
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