1. Department of Neurology; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania USA
2. Cellular and Molecular Biology Graduate Group; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania USA
3. Department of Pathology and Laboratory Medicine; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania USA
4. Booth Gardner Parkinson's Care Center; Evergreen Hospital Medical Center; Kirkland Washington USA
5. Cleveland Clinic Ruvo Center for Brain Health; Cleveland Ohio USA
6. Virginia Mason Medical Center; Seattle Washington USA
7. VA Puget Sound Health Care System and Department of Neurology; University of Washington Seattle; Seattle Washington USA
8. Department of Psychiatry; Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania USA