1. Unit of Maxillo-Facial Surgery, Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, Verona, Italy
2. Unit of Human Anatomy, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
3. Unit of Facial Plastic Surgery and Head and Neck Surgery, The Blackheath Hospital, London, United Kingdom
4. Unit of Otorhinolaryngology, Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, Verona, Italy