1. Division of Hematology & Oncology, Department of Medicine, Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
2. Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
3. Division of Palliative Care & Geriatric Medicine, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
4. Department of Psychiatry, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA