1. Pharmaceutical Development Service Section, Pharmacy Department, Warren Grant Magnuson Clinical Center (WGMCC), National Institutes of Health, Bethesda, MD
2. Professional Services, Amgen, Inc., Thousand Oaks, CA; when the guidelines described in this article were prepared he was Deputy Chief, Pharmacy Department, WGMCC
3. Pharmaceutical Development Service Section, Pharmacy Department, WGMCC
4. Pharmacy Department, WGMCC