| 1 (2096) | Russian Academy of Medical Sciences | RUS |  |
| 2 (3796) | Institute of Oncology Ljubljana | SVN | |
| 3 (3973) | Tartu University Hospital | EST | |
| 4 (4019) | Maria Sklodowska-Curie Memorial Institute of Oncology | POL | |
| 5 (4132) | Children's Memorial Health Institute | POL | |
| 6 (4233) | University General Hospital | CZE | |
| 6 (4233) | University Hospital Hradec Kralove | CZE | |
| 8 (4323) | St. Anne's University Hospital Brno | CZE | |
| 9 (4444) | Clinical Center of Serbia | SRB | |
| 9 (4444) | Masaryk Memorial Cancer Institute | CZE | |
| 11 (4577) | University Hospital Centre Zagreb | HRV | |
| 12 (4593) | Nofer Institute of Occupational Medicine | POL | |
| 13 (4602) | Institute of Cardiology | POL | |
| 14 (4606) | Motol University Hospital | CZE | |
| 15 (4621) | Institute for Clinical and Experimental Medicine | CZE | |
| 16 (4729) | National Institute of Public Health, Czech Republic | CZE | |
| 17 (5074) | Military Medical Academy | SRB | |
| 18 (5174) | Polish Mothers Memorial Hospital Research Institute | POL | |
| 19 (5177) | Clinical Hospital Centre Rijeka | HRV | |
| 20 (5192) | University Hospital in Olomouc | CZE | |
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