1. Minneapolis Heart Institute, Minneapolis, Minnesota
2. Minneapolis Heart Institute Foundation, Minneapolis, Minnesota
3. Veterans Affairs Eastern Colorado Health Care System, Denver
4. University of Colorado School of Public Health, Aurora
5. Emory University School of Medicine, Rollins School of Public Health, Atlanta, Georgia
6. Cedars-Sinai Medical Center, Los Angeles, California
7. University of Iowa Carver College of Medicine, Iowa City
8. Beth Israel Deaconess Medical Center, Boston, Massachusetts