1. Division of Nutrition and Metabolic Diseases, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas;
2. Center for Human Nutrition, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas;
3. Department of Kinesiology, Texas Christian University, Fort Worth, Texas;
4. Department of Internal Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas;
5. Department of Clinical Sciences, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas.