1. Division of Palliative Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.
2. Division of Gastroenterology and Hepatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
3. Division of Digestive Diseases, David Geffen School of Medicine at University of California, Los Angeles, California, USA.
4. Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California, USA.
5. Department of Pharmacy and Palliative Care Program, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
6. Division of Palliative Care, Department of Medicine, Main Line Health, Radnor, Pennsylvania, USA.
7. Brookdale Department of Geriatrics and Palliative Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
8. Geriatric Research, Education, and Clinical Center, James J. Peters VA Medical Center, Bronx, New York, USA.
9. Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
10. Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine University of California, Los Angeles, USA.
11. Department of Medicine and Palliative Care Program, Duke University School of Medicine, Durham, North Carolina, USA.
12. Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.