1. U.O.C. Otorhinolaryngology, ASST Grande Ospedale Metropolitano Niguarda Piazza Ospedale Maggiore, 3 - 20162 Milan, Italy
2. Department of Obstetrics and Gynaecology, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 58-60, 20132, Milan, Italy.
3. Lausanne University Hospital (CHUV), Plastic and Hand surgery département, Rue du bugnon 46, 1011, Lausanne, Switzerland