1 Department of Physical Medicine and Rehabilitation, Washington University School of Medicine, St. Louis, MO(∗).
2 Department of Physical Medicine and Rehabilitation, Temple Medical School, Philadelphia, PA(†).
3 Department of Physical Medicine and Rehabilitation, The Johns Hopkins University School of Medicine, Baltimore, MD(‡).
4 Departments of Medical Humanities and Bioethics and Physical Medicine and Rehabilitation, Northwestern University Feinberg School of Medicine, 750 N Lake Shore Dr, Chicago, IL 60611; Schwab Rehabilitation Hospital, Chicago, IL(§). Electronic address: k-kirschner@northwestern.edu.