1. National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
2. Burroughs Wellcome Corporation, Research Triangle Park, North Carolina
3. Clement Associates, Inc., Ruston, Louisiana
4. Statistics Unlimited, Inc., Auburndale, Massachusetts
5. Biopharmaceutical Research Consultants, Inc., Ann Arbor, Michigan
6. * Previous affilation: Warner-Lambert Company, Ann Arbor, Michigan.