1. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
2. Division of Palliative Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
3. Harvard Medical School, Boston, Massachusetts, USA.
4. Section of Palliative Care, Division of General Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
5. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.