1. Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
2. University of Michigan Medical School, Ann Arbor, MI 48109, USA
3. Neurology Service and GRECC, VA Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA
4. Morris K. Udall Center of Excellence for Parkinson’s Disease Research, University of Michigan, Ann Arbor, MI 48109, USA
5. Parkinson’s Foundation Research Center of Excellence, University of Michigan, Ann Arbor, MI 48109, USA
6. Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
7. Department of Psychiatry, University of Michigan, Ann Arbor, MI 48109, USA
8. Heinz C. Prechter Bipolar Research Program, University of Michigan, Ann Arbor, MI 48109, USA