1. Duke Comprehensive Cancer Center, Cancer Prevention, Detection and Control Research Program, Durham, North Carolina.
2. Department of Community and Family Medicine, Duke University Medical Center, Durham, North Carolina.
3. Section of Palliative Care and Medical Ethics, Division of General Internal Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
4. Institute to Enhance Palliative Care, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
5. Institute for Doctor-Patient Communication, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.