1 Otolaryngology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy.
2 Department of Biomedical, Metabolic and Neural Sciences, Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy.
3 Pneumology Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy.