1. Department of Biomedical and Neuromotor Sciences, “Alma Mater Studiorum” Università degli Studi di Bologna, Bologna, Italy
2. Department of Mental Health and Pathological Addictions, Azienda USL di Parma, Parma, Italy
3. Department of Mental Health and Pathological Addictions, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
4. Division of Pain Medicine, Department of Medicine and Surgery, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy