1. Duke Clinical Research Institute, Durham, North Carolina
2. Carolinas Medical Center, Charlotte, North Carolina
3. Duke Clinical Research Institute, Durham, North Carolina3Center for Educational Excellence, Durham, North Carolina
4. Wake County EMS, Raleigh, North Carolina
5. WFU Health Sciences, Winston-Salem, North Carolina
6. Duke Clinical Research Institute, Durham, North Carolina6Department of Community and Family Medicine, Duke University, Durham, North Carolina
7. Duke Clinical Research Institute, Durham, North Carolina7The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
8. Nicholas School of the Environment, Duke University, Durham, North Carolina
9. Emory University School of Medicine, Atlanta, Georgia10Rollins School of Public Health, Emory University, Atlanta, Georgia