1. Maxillofacial Surgery Unit, Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Naples, Italy
2. Otolaryngology and Maxillo-Facial Surgery Unit, Istituto Nazionale Tumori—IRCCS Fondazione G. Pascale, 80131 Naples, Italy
3. Maxillofacial Surgery Operative Unit, University Hospital of Sassari, 07100 Sassari, Italy
4. Maxillofacial Surgery Unit, Santa Maria Della Misericordia Hospital, San Sisto, 06121 Perugia, Italy