1. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy
2. Post Graduate School of Orthodontics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
3. Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy