1. Department of Medicine, Duke Cancer Institute, Duke University, Durham, North Carolina, USA.
2. Duke Fuqua School of Business, Durham, North Carolina, USA.
3. Department of Population Health Sciences, Duke School of Medicine, Durham, North Carolina, USA.
4. Four Seasons, Hendersonville, North Carolina, USA.
5. Department of Biostatistics, Duke School of Medicine, Durham, North Carolina, USA.
6. Department of Pediatrics, Duke School of Medicine, Durham, North Carolina, USA.
7. Duke Clinical Research Institute, Duke Margolis Center for Health Policy, Durham, North Carolina, USA.
8. Department of Family Medicine and Community Health, Duke Sanford School of Public Policy, Durham, North Carolina, USA.