1. INGM (National Institute of Molecular Genetics), Milan, Italy;
2. DRFZ (German Rheumatology Research Institute), Berlin, Germany;
3. Charité Universitätsmedizin, Berlin, Germany; and
4. Department of Clinical Sciences and Community Health, University of Milan, Unità Operativa Otorinolaringoiatria, “Fondazione Istituto Di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico,” Milan, Italy