1. Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111
2. Department of Food and Nutrition, Kyung Hee University, Seoul 130-701, Korea
3. Department of Medicine, Botucatu School of Medicine, University of Sao Paulo State, Botucatu 18618-000, SP, Brazil
4. Center of Alcohol Research, Liver Disease and Nutrition, Salem Medical Center, University of Heidelberg, D-69120 Heidelberg, Germany