1. Department of Internal Medicine, Division of Cardiovascular Medicine, Dartmouth Hitchcock Medical Center , Lebanon, NH , USA
2. Department of Emergency Medicine, Harvard Medical School , 75 Francis St, Boston 02115, MA , USA
3. Department of Emergency Medicine, Brigham and Women’s Hospital , 75 Francis St, Boston, MA 02115 , USA
4. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute , Boston, MA , USA
5. Department of Medicine, Adult Palliative Care Services, Columbia University Irving Medical Center , New York, NY , USA