1. Departments of Health Care Sciences and Neurology, Wayne State University, Detroit, MI, USA
2. Physical Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA
3. Program in Physical Therapy, Department of Rehabilitative and Regenerative Medicine, G.H. Sergievsky Center, Columbia University, New York, NY, USA
4. Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY, USA