1. Boston University School of Medicine, Boston, Massachusetts, USA.
2. Department of Emergency Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
3. Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA.
4. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
5. Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
6. Survey and Data Management Core, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
7. Department of Biobehavioral Nursing and Health Informatics, University of Washington School of Nursing, Seattle, Washington, USA.
8. Serious Illness Care Program, Ariadne Labs, Boston, Massachusetts, USA.