1 Department of Neurology, University of Washington, 325 Ninth Avenue, Seattle, WA 98104, USA clairejc@uw.edu.
2 Department of Neurology, University of Washington, 325 Ninth Avenue, Seattle, WA 98104, USA.
3 Department of Neurology, University of Rochester Medical Center, Rochester, NY, USA Department of Medicine, Division of Palliative Care, University of Rochester Medical Center, Rochester, NY, USA.