1. Department of Computer-Assisted Molecular Design, Abbott Laboratories, Abbott Park, IL 60064.
2. Meridien Research, Oak Park, IL 60303.
3. Department of Anti-Infectives Research, Abbott Laboratories, Abbott Park, IL 60064.
4. Department of Molecular and Cellular Biology, Abbott Laboratories, Abbott Park, IL 60064.
5. Department of Hepatitis/AIDS Research, Abbott Laboratories, North Chicago, IL 60064.