1. UCLA School of Public Health, Los Angeles, CA 90095
2. Zentrumsabteilung fur Lebensmitteltoxikologie, Tierarztliche Hochschule Hannover, D-30173, Hannover, Germany
3. Department of Biochemistry, Vanderbilt University, Nashville, Tennessee, 37232-0146
4. Food, Nutrition and Consumer Sciences Department, California State Polytechnic University, Pomona, CA. 91768
5. UCLA Center for Human Nutrition, Los Angeles, CA 90095-1742