1. Clalit Health Services, Tel Aviv, Israel
2. Department of Otolaryngology, Head and Neck Surgery, Kaplan Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
3. Department of Otolaryngology-Head and Neck Surgery, Shamir Medical Center (formerly Assaf Harofeh), Zerifin, Israel, affiliated to the Sackler School Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
4. Clinical Research Center, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheba, Israel
5. Joyce and Irvin Goldman Medical School, Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheba, Israel
6. Division of Otorhinolaryngology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheba, Israel
7. Department of Otolaryngology-Head and Neck Surgery, Samson Assuta Ashdod University Hospital, Ashdod, Israel and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheba, Israel