1. AstraZeneca, Wilmington, DE 19850-5437
2. Wyeth Research, Chazy, NY 12921
3. GlaxoSmithKline, King of Prussia, PA 19406
4. DuPont Company, Haskell Lab for Environmental Sciences Toxicology and Industrial Medicine, Newark, DE 19714-0050
5. Amgen, Inc., Thousand Oaks, CA 91320
6. Pfizer Global Research & Development, Groton, CT 06340
7. National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709
8. Purdue University School of Veterinary Medicine, West Lafayette, IN 47907-2027
9. Independent Consultant, Kalamazoo, MI 49001