1. Department of Medicine, Division of Palliative Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA.
2. Department of Medicine, Division of Palliative Care, Einstein Healthcare Network (Einstein Medical Center Montgomery), Norristown, Pennsylvania, USA.
3. Department of Medicine, Division of Geriatrics and Palliative Care, Icahn School of Medicine at Mount Sinai, New York, New York. USA.
4. Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California, San Diego Health, La Jolla, California, USA.
5. Department of Medicine, Division of Palliative Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA.