1. Department of Community and Family Medicine, Duke University, Durham, North Carolina
2. Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, Maryland
3. Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
4. Department of Medicine, Columbia University Medical Center, New York, New York
5. Nemours Cardiac Center, Alfred I. DuPont Hospital for Children, Wilmington, Delaware
6. Division of Health System Innovation and Research, Department of Population Health Sciences, University of Utah, Salt Lake City
7. Department of Epidemiology, University of Alabama at Birmingham, Birmingham