1. Sackler School of Medicine Tel Aviv University Tel Aviv Israel
2. Department of Otorhinolaryngology and Head and Neck Surgery Rabin Medical Center Petah Tikva Israel
3. Department of Otolaryngology Head and Neck Surgery, Kaplan Medical Center Rehovot Israel
4. Hebrew University and Hadassah Medical School Jerusalem Israel
5. Davidoff Cancer Center Rabin Medical Center, Beilinson Hospital Petah Tikva Israel