1. HealthPartners Neuroscience Center; Saint Paul MN
2. HealthPartners Institute; Bloomington MN
3. University of Virginia, Department of Neurology; Charlottesville VA
4. University of Kansas School of Medicine-Wichita, Department of Psychiatry and Behavioral Sciences; Wichita KS
5. Departments of Psychiatry and Neurology; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA
6. Parkinson's Disease and Mental Illness Research, Education and Clinical Centres, Philadelphia Veterans Affairs Medical Centre; Philadelphia PA