1. Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.
2. Division of Palliative Medicine, Departments of Medicine and Psychiatry, University of California San Francisco, San Francisco, California, USA.
3. Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
4. School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
5. Department of Physical Therapy, Duke University School of Physical Therapy, Durham, North Carolina, USA.
6. Division of Geriatrics and Palliative Medicine, Weill Cornell Medicine, New York, New York, USA.
7. Division of Palliative Medicine, Department of Medicine, MedStar Health, Georgetown University School of Medicine, Baltimore, Maryland, USA.
8. Department of Veterans Affairs, Durham Veterans Affairs Medical Center, Durham, North Carolina, USA.
9. Section of Palliative Care, Department of Medicine, School of Medicine, Stanford University, Palo Alto, California, USA.
10. Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, New York, USA.