1 Department of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA 02215, USA; Harvard Medical School Center for Palliative Care, Boston, MA, USA. Electronic address: sblock@partners.org.
2 Harvard Medical School Center for Palliative Care, Boston, MA, USA; Cambridge Health Alliance, Massachusetts General Hospital, Boston, MA, USA.