1. Division of Maxillofacial Surgery, Department of Medicine, Academic Hospital of Udine, University of Udine, Udine, Italy
2. Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
3. Department of Otolaryngology, University of Verona, Verona, Italy
4. University Vita-Salute San Raffaele, Milan, Italy
5. Surgical Medical Group, Milan, Italy