1. Monell Chemical Senses Center (K.L.T.), Philadelphia, Pennsylvania 19104
2. Department of Medicine (K.L.T., D.R., R.R.T.), University of Pennsylvania, Philadelphia, Pennsylvania 19104
3. Department of Nutrition, University of California, Davis (S.S.E., P.J.H.), Davis, California 95616
4. Eli Lilly (M.T., M.H.), Indianapolis, Indiana 46285
5. University of British Columbia (T.J.K.), Vancouver, British Columbia, Canada V6T 1Z4
6. U.S. Department of Agriculture, Western Human Nutrition Research Center (N.L.K.), Davis, California 95616
7. Department of Medicine, University of Cincinnati (D.D.), Cincinnati, Ohio 45267