1. Abbott Laboratories
2. AstraZeneca
3. Eli Lilly & Company
4. Endo Pharmaceuticals Inc.
5. F. Hoffmann La Roche Ltd.
6. GlaxoSmithKline Plc
7. Johnson & Johnson Services
8. Mallinckrodt Pharmaceuticals Company
9. Merck & Co. Inc.
10. Novartis AG
11. Pfizer Inc.
12. Purdue Pharma L.P.
13. Teva Pharmaceutical Industries Ltd.