1. Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle
2. Cambia Palliative Care Center of Excellence, University of Washington, Seattle
3. Harborview Medical Center, Department of Neurology, University of Washington, Seattle
4. Palliative and Supportive Care Service, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
5. Department of Biostatistics, University of Washington School of Public Health, Seattle
6. Department of Neurology, University of Rochester Medical Center, Rochester, New York