1. From the Nutrition and Health Science Program, Graduate School of Arts and Science, Emory University, Atlanta, Georgia; the Department of Medicine and the Center for Clinical and Molecular Nutrition, Emory University School of Medicine, Atlanta, Georgia; the Department of Pediatrics, Emory University, Atlanta, Georgia; the Department of Medicine, Washington University School of Medicine, St Louis, Missouri; and Specialty Care Service Line, St Louis VA Medical Center, St Louis, Missouri.