1. Charles River Laboratories
2. Crown Bioscience Inc.
3. Eurofins Scientific SE
4. Evotec SE
5. ICON Plc
6. Labcorp Drug Development
7. Medpace Inc.
8. MI Bioresearch Inc.
9. Parexel International Corporation
10. Pharmacology Discovery Services
11. PPD Inc.
12. Syneos Health
13. Syngene International Limited
14. Taconic Biosciences Inc.
15. WuXi AppTec Inc.