1. Advanced Algology Research Unit; Multidisciplinary Spine Center; Santa Maria Maddalena Hospital; Occhiobello (RO) Italy
2. Department of Experimental Biomedicine and Clinical Neurosciences (BioNeC); University of Palermo; Palermo Italy
3. Department of Spine Surgery; Multidisciplinary Spine Center; Santa Maria Maddalena Hospital; Occhiobello (RO) Italy