1. Amgen, Inc., Thousand Oaks, CA, USA
2. Eli Lilly and Company, Lilly Corporate Center, IN, USA
3. GlaxoSmithKline, King of Prussia, Pennsylvania, PA, USA
4. Sanofi-aventis, Bridgewater, NJ, USA
5. Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, USA