1. Division of Psychiatry, Durham VA Medical Center, Durham, North Carolina, USA.
2. Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina, USA.
3. Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.
4. Duke HomeCare and Hospice, Durham, North Carolina, USA.
5. Department of Medicine and Palliative and Advanced Illness Research Center, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
6. Department of Medicine and Center for Research on End-of-Life Care, Weill Cornell Medicine, New York, New York, USA.
7. Department of Palliative Care, Duke University School of Medicine, Durham, North Carolina, USA.