1. Department of Physical Medicine and Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
2. Palliative Care Section, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
3. Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota.
4. Department of Physical Medicine and Rehabilitation, University of Michigan Medical School, Ann Arbor, Michigan.
5. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts.
6. Palliative Medicine, OhioHealth, Columbus, Ohio.
7. Palliative and Advanced Illness Research Center, University of Pennsylvania, Philadelphia, Pennsylvania.
8. Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.