1 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Audiology Unit, Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: mirko.alde@unimi.it.
2 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Audiology Unit, Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: federica.diberardino@unimi.it.
3 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy. Electronic address: umberto.ambrosetti@unimi.it.
4 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy. Electronic address: stefania.barozzi@unimi.it.
5 Department of Pathophysiology and Transplantation, University of Milan and Unit of Bronchopneumology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: gioia.piatti@unimi.it.
6 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Audiology Unit, Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
7 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Otolaryngology Unit, Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: lorenzo.pignataro@unimi.it.
8 Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Otolaryngology Unit, Department of Specialist Surgical Sciences, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: giovanna.cantarella@unimi.it.