1. Department of Otorhinolaryngology, San Luigi Gonzaga University Hospital, Università degli Studi di Torino, Turin, Italy
2. ISGOS, The Italian Study Group on Odontogenic Sinusitis
3. Department of Health Sciences, Maxillofacial Surgery Unit, Santi Paolo e Carlo Hospital, Università degli Studi di Milano, Milan, Italy
4. Department of Health Sciences, Otolaryngology Unit, Santi Paolo e Carlo Hospital, Università degli Studi di Milano, Milan, Italy
5. Department of Clinical Sciences and Translational Medicine, Unit of Otorhinolaryngology, University of Tor Vergata, Rome, Italy