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. Rehabilitation Unit, Rehabilitation Department, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
4. Physical and Rehabilitation Medicine Unit, University Hospital “Maggiore della Carità”, Novara, Italy
5. Neurosurgical Unit, Surgical Department, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria, Italy