1. Burke Institute of Medical Research, White Plains, NY, USA
2. Department of Neurology and Neuroscience, Weill Medical College, Cornell University, New York, NY, USA
3. Berenson-Allen Center for Non-Invasive Brain Stimulation, Harvard Medical School, Boston, MA, USA
4. Centre for Neuromuscular and Neurological Disorders, University of Western Australia, WA, Australia
5. Mechanical Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, USA
6. Department of Neurology, University of Maryland, School of Medicine, Baltimore, MD, USA