1. Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland
2. Department of Neurology, The Ohio State University, Columbus, Ohio
3. Department of Physical Therapy, The College of St Scholastica, Duluth, Minnesota
4. Department of Biomedical Informatics, Department of Neurology, Department of Neuroscience, The Ohio State University
5. Department of Physical Therapy and Kinesiology, University of Massachusetts Lowell, 3 Solomon Way, Weed Hall 218D, Lowell, MA 01854 (USA)