1. Department of Neurology, USF Ataxia Research Center University of South Florida (USF) Tampa Florida USA
2. Department of Neurology, James A. Haley Veteran's Hospital Tampa Florida USA
3. Department of Biostatistics University of South Florida College of Public Health Tampa Florida USA
4. Department of Neurosurgery and Brain Repair, Movement Disorders Neuromodulation Center University of South Florida Tampa Florida USA