Institute for Biobehavioral Health Research, National Development and Research Institutes, Inc., 1920 West 143rd Street, Suite 120, Leawood, KS 66224, USA. Temple University, Philadelphia, PA, USA. MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK. Global Scientific and Regulatory Affairs, The Coca-Cola Company, Atlanta, GA, USA. Behavioral Medicine Research Center, Baylor College of Medicine, Houston, TX, USA.