1. Department of Otolaryngology–Head and Neck Surgery, Rambam Medical Center and Technion Faculty of Medicine, Haifa, Israel
2. Department of Otolaryngology, B'nai Zion Medical Center and Technion Faculty of Medicine, Haifa
3. Department of Otorhinolaryngology, L'Universite de Médicine et de Pharmacia, Iasi, Romania