1. Sherrilene Classen, PhD, MPH, OTR/L, is Professor and Director, School of Occupational Therapy, Elborn College, Room 2555B, 1201 Western Road, Western University, London, Ontario N6G 1H1 Canada. At the time of the study, she was Director, Institute for Mobility, Activity and Participation, and Associate Professor, Department of Occupational Therapy, College of Public Health and Health Professions
2. Babette Brumback, PhD, is Professor and Program Director, Department of Biostatistics, University of Florida, Gainesville
3. Miriam Monahan, MS OT, CDRS, is Occupational Therapist and Certified Driving Rehabilitation Specialist, Department of Occupational Therapy and Institute for Mobility, Activity and Participation, University of Florida, Gainesville
4. Irene I. Malaty, MD, is Assistant Professor, Center for Movement Disorders and Neurorestoration, Department of Neurology, University of Florida, Gainesville
5. Ramon L. Rodriguez, MD, is Director, Movement Disorders Clinic, Center for Movement Disorders and Neurorestoration, Department of Neurology, University of Florida, Gainesville
6. Michael S. Okun, MD, is Co-Director, Center for Movement Disorders and Neurorestoration, Department of Neurology, University of Florida, Gainesville
7. Nikolaus R. McFarland, MD, PhD, is Assistant Professor, Department of Neurology, University of Florida, Gainesville