1. Department of Neurology at University of California, San Francisco, CA, USA
2. San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
3. Departments of Neurology and Medicine at University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
4. Department of Medicine, Division of Geriatrics at University of California, San Francisco, CA, USA
5. Department of Neurology at Stanford University, Stanford, CA, USA
6. Parkinson’s Foundation, New York, NY, USA
7. College of Nursing, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
8. Department of Medicine, Division of General Internal Medicine, University of Colorado School of Medicine, Aurora, CO, USA
9. Department of Medicine, Division of Palliative Medicine at University of California, San Francisco, CA, USA
10. Center for Health and Technology, University of Rochester, Rochester, NY, USA
11. Departments of Neurology and Medicine, Division of Palliative Care, University of Rochester, Rochester, NY, USA