1. University of South Florida Ataxia Research Center, Department of Neurology, FL, USA
2. McKnight Brain Institute, University of Florida Department of Neurology, FL, USA
3. Department of Neurology, Columbia University, NY, USA
4. Department of Neurology, Neurogenetics Program, David Geffen School of Medicine, University of California, CA, USA
5. Department of Neurology, Emory University, GA, USA
6. Ataxia and Huntington Disease Center of Excellence, University of California, CA, US
7. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University school of Medicine MD, USA
8. Department of Neurology, Johns Hopkins University School of Medicine, MD, USA
9. Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, MD, USA
10. Department of Ophthalmology, Johns Hopkins University School of Medicine, MD, USA
11. James A. Haley Veterans’ Hospital, FL, USA