1 Maxillofacial Surgery Operative Unit, Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy.
2 Biomedical Science Department, PhD School of Biomedical Science, University of Sassari, Sassari, Italy.
3 Department of Medical, Surgical and Health Sciences, Section of Otolaryngology, University of Trieste, Trieste, Italy.
4 Department of otorhinolaryngology, King's College, London, UK.
5 British Rhinological Society, London, UK.
6 Department of Anatomy and Experimental Oncology, Mons School of Medicine, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium.
7 Department of Otolaryngology-Head Neck Surgery, Elsan Polyclinic of Poitiers, Poitiers, France.