1 Unit of Physical Medicine and Rehabilitation, G. D'Annunzio University of Chieti-Pescara, Department of Oral Medical Science and Biotechnology (DSMOB), Italy.
2 Centro per Neurolesi "Bonino Pulejo," IRCSS, Messina, Italy.
3 Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy.