1. University of South Florida (USF) Department of Neurology, USF Ataxia Research Center, Tampa, Florida, USA
2. Department of Neurology, James A Haley Veteran’s Hospital, Tampa, Florida, USA
3. Department of Neurology, Columbia University, New York, New York, USA
4. Department of Neurology, Initiative for Columbia Ataxia and Tremor, New York, New York, USA