- Boehringer Ingelheim Pharmaceuticals
- Wyeth Clinical Supplies
- GlaxoSmithKline
- Merck Research Laboratories
- Johnson & Johnson
- Covance
- Wyeth
- Covance
- Akros Pharma
- AstraZeneca
- Kos Pharmaceuticals
- Schering-Plough Research Institute
- Merck & Co
- Pfizer
- Pfizer Global Research & Development
- Amgen
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- Sanofi-Synthelabo Research
- Schering-Plough
- Johnson & Johnson
- Schering-Plough Research Institute
- Wyeth-Ayerst Research
- Schering-Plough Research Institute
- J&J Pharmaceutical Research & Development
- Chiron
- Ortho Biotech Products
- Allergan
- Pfizer Global Research & Development
- Boehringer Ingelheim Pharmaceuticals
- Nabi Pharmaceuticals
- Chiron
- Roche
- Janssen Pharmaceuticals
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