1. Division of Cardiology; Duke University Medical Center; Durham, North Carolina
2. Duke Clinical Research Institute; Duke University Medical Center; Durham, North Carolina
3. Division of General Internal Medicine; Duke University Medical Center; Durham, North Carolina
4. Duke Evidence-based Practice Center; Duke Clinical Research Institute, Duke University; Durham, North Carolina
5. Department of Community and Family Medicine; Duke University School of Medicine; Durham, North Carolina
6. Department of Biostatistics and Bioinformatics; Duke University School of Medicine; Durham, North Carolina