1. Eli Lilly and Co., Indianapolis, IN, USA
2. National Centre for the Replacement, Refinement, and Reduction of Animals in Research, London, UK
3. Pfizer, Inc., La Jolla, CA, USA
4. Centocor R&D, a division of J&J PRD, L.L.C., Radnor, PA, USA
5. US Food and Drug Administration, Silver Spring, MD, USA