1 Neuroriabilitazione ad Alta Intensità, Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy. Electronic address: danielecoraci@aol.com.
2 Geriatric Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
3 IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy.
4 Department of Physical Medicine and Rehabilitation, "Sapienza" University, Rome, Italy.
5 Neuroriabilitazione ad Alta Intensità, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Department of Geriatrics, Neurosciences and Orthopaedics, Università Cattolica del Sacro Cuore, Rome, Italy.