1. University of South Florida (USF) Department of Neurology, USF Ataxia Research Center, Tampa Florida, James A Haley Veteran’s Hospital, Tampa, Florida, USA
2. Department of Neurology, Columbia University, New York, NY, USA
3. Initiative for Columbia Ataxia and Tremor, New York, NY, USA
4. Universidad Central Del Caribe School of Medicine, Bayamon, Puerto Rico