1. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
2. Department of Psychiatry, Boston Children's Hospital and Brigham and Women's Hospital, and Harvard Medical School, Boston, Massachusetts, USA.
3. Phyllis F. Cantor Center for Research in Nursing and Patient Care Services, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
4. Departments of Psychiatry and Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.