1. United Therapeutics Corporation
2. APEIRON Biologics AG
3. Baxter International Inc.
4. Cell Ectar Biosciences Inc.
5. Pfizer Inc.
6. Bayer AG
7. Provectus Biopharmaceuticals Inc.
8. Sartorius AG
9. Amgen Inc.
10. F. Hoffmann-La Roche AG