1 The Ken and Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
2 McGaw Bioethics Scholars Program, Center for Bioethics and Humanities, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
3 Division of Geriatric Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA.
4 Eastern Colorado VA Geriatric Research Education and Clinical Center, Rocky Mountain Regional VA Medical Center, Aurora, Colorado, USA.
5 Department of Neurology, University of Washington, Seattle, Washington, USA.
6 Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
7 Human-Computer Interaction Institute, School of Computer Science, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA.
8 Kellogg School of Management, Northwestern University, Evanston, Illinois, USA.
9 Center for Bioethics and Medical Humanities, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
10 Section of Palliative Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
11 Palliative Care Service, Jesse Brown VA Medical Center, Chicago, Illinois, USA.
12 Departments of Neurology and Medicine, University of Rochester Medical Center, Rochester, New York, USA.