1. Department of Physical Medicine and Rehabilitation, University of Medicine and Dentistry of New Jersey – New Jersey Medical School, Newark, NJ, USA
2. Department of Neurology and Neurosciences, University of Medicine and Dentistry of New Jersey – New Jersey Medical School, Newark, NJ, USA
3. Department of Neuroscience, University of Rome “Tor Vergata”, Rome, Italy
4. Neurology and Neurological Rehabilitation Unit, I.R.C.C.S. “Santa Lucia” Foundation, Rome, Italy