| 1 (612) | Medical Research Council | GBR |  |
| 2 (753) | China Medical University Hospital | TWN | |
| 3 (837) | Centers for Disease Control and Prevention | USA | |
| 4 (1094) | U.S. Department of Health & Human Services * | USA | |
| 5 (1583) | Institut National de la Sante et de la Recherche Medicale * | FRA | |
| 6 (1846) | National Institute for Public Health and the Environment | NLD | |
| 7 (2051) | Boston University Medical Campus | USA | |
| 8 (2356) | Russian Academy of Medical Sciences | RUS | |
| 9 (2456) | Center for Disease Control and Prevention China | CHN | |
| 10 (2489) | Instituto de Salud Carlos III * | ESP | |
| 11 (2609) | Ministry of Health | IRQ | |
| 12 (2669) | Fundacao Oswaldo Cruz * | BRA | |
| 13 (2676) | Instituto Oswaldo Cruz | BRA | |
| 14 (3017) | National Defense Medical Center | TWN | |
| 15 (3393) | Universite Hassiba BenBouali de Chlef | DZA | |
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