1. Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv: Sourasky: Medical Center, "Sackler" School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
2. Department of Otolaryngology Head and Neck Surgery, Barzilai Medical Center, Ashkelon, Israel, Faculty of Health Sciences, "Ben-Gurion" University of the Negev, Ashkelon, Israel