Memphis Veterans Affairs Medical Center and University of Tennessee Health Sciences Center, Memphis. Columbia University College of Physicians and Surgeons, New York, New York. Wake Forest School of Medicine, Wake Forest, North Carolina. University of Washington, Seattle. University of North Carolina, Chapel Hill. Li Ka Shing Knowledge Institute and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Ontario, Canada. HealthPartners Institute, Minneapolis, Minnesota. Atlanta Veterans Affairs Medical Center, Atlanta, Georgia. Diabetes Endocrine Nutrition Group, Mentor, Ohio. McMaster Medical Center, Hamilton, Ontario, Canada. Berman Center for Outcomes and Clinical Research, Minneapolis, Minnesota. Cleveland Veterans Affairs Medical Center, Cleveland, Ohio. Colorado School of Public Health, Aurora, Colorado. National Heart, Lung, and Blood Institute, Division of Cardiovascular Sciences, Bethesda, Maryland.