1. Institute of Normal Human Morphology, Polytechnic University of Marche, Ancona - Italy
2. Department of Experimental Surgery, Research Institute “Codivilla-Putti”, Rizzoli Orthopedic Institute, Bologna - Italy
3. Department of Communication, Computer and System Sciences, University of Genova, Genova - Italy
4. Chair of Surgical Pathophysiology, Faculty of Medicine, University of Bologna, Bologna - Italy