| 1 (2405) | Institute of Organic Chemistry with Centre of Phytochemistry Bulgarian Academy of Sciences | BGR |  |
| 2 (2530) | Bulgarian Academy of Sciences * | BGR | |
| 3 (4196) | University of Plovdiv Paisii Hilendarski | BGR |  |
| 4 (4219) | Institute of Biophysics and Biomedical Engineering Bulgarian Academy of Sciences | BGR | |
| 5 (4504) | Medical University - Plovdiv | BGR | |
| 6 (4756) | Medical University of Sofia * | BGR | |
| 7 (4869) | Sofia University | BGR | |
| 8 (5033) | Medical University of Varna Pof. Dr. Paraskev Stoyano | BGR | |
| 9 (5310) | Institute of Biodiversity and Ecosystems Research Bulgarian Academy of Sciences | BGR | |
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