1. Department of Neurosciences-Complex Operative Unit of Otorhinolaryngology and Otosurgery, University Hospital of Padua, Via Giustiniani 2, 35128 Padua, Italy
2. ENT & Audiology Department, University Hospital of Ferrara, Via Aldo Moro 8, 44124 Cona, Ferrara, Italy
3. Centre for Haemostasis & Thrombosis, Haematology Section, Department of Medical Sciences, University of Ferrara, 44100 Ferrara, Italy