1. Department of Surgical Sciences, Section of Orthopedy, Traumatology and Functional Rehabilitation, University of Parma, 43121 Parma, Italy
2. Department of Clinic Sciences, Section of Respiratory Physiopathology, University of Parma, 43121 Parma, Italy
3. Department of Human Anatomy, Pharmacology and Forensic Medicine, University of Parma, 43121 Parma, Italy