1 Maxillo-Facial Surgery Division, Department of Surgery, University Hospital of Parma, Parma, Italy.
2 Maxillo-Facial Surgery Division, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Policlinico of Milano, Milan, Italy.
3 Maxillo-Facial Surgery Division, Policlinico Umberto I of Rome, Rome, Italy.
4 Maxillo-Facial Surgery Division, Federico II University of Napoli, Naples, Italy.
5 Maxillo-Facial Surgery Division, Policlinico Sant'Orsola Malpighi of Bologna, Bologna, Italy.
6 Maxillo-Facial Surgery Division, University of Torino, Turin, Italy.
7 Maxillo-Facial Surgery Division, Bufalini Hospital of Cesena, Cesena, Italy.
8 Operative Unit of Maxillo-Facial Surgery, Otolaryngology and Dentistry, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo (Fg), Italy.
9 Maxillo-Facial Surgery Division, Hospital of Sassari, Sassari, Italy.