1. Physical and Rehabilitative Medicine, Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, Novara, Italy
2. Rehabilitation Unit, “Mons. L. Novarese” Hospital, Moncrivello, Vercelli, Italy
3. Division of Physical Medicine and Rehabilitation, Department of Surgical Sciences, University of Turin, Turin, Italy
4. Physical Medicine and Rehabilitation Unit, University Hospital “Maggiore della Carità”, Novara, Italy