1. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
2. UCSF School of Medicine, San Francisco, California, USA.
3. Department of Medicine, University of California Los Angeles, Los Angeles, California, USA.
4. VDepartment of Medicine, A Greater Los Angeles Health System, Los Angeles, California, USA.
5. Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
6. Department of Medicine, Harvard Medical School, Harvard University, Boston, Massachusetts, USA.