1. Department of Medicine, Division of Infectious Diseases, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
2. Department of Medicine, Division of Endocrinology, Metabolism and Lipid Research, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
3. Department of Medicine, Center for Human Nutrition, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA