From the Departments of Otolaryngology and Head & Neck Surgery; Department of Otolaryngology, Head and Neck Surgery, Shaare Zedek Medical Center
2.Shaare Zedek Medical Center, Jerusalem; Department of Pediatrics, Hadassah University Hospital, Jerusalem
3.From the Departments of Otolaryngology and Head & Neck Surgery
4.Lumenis Co. Ltd., Yokneam all in Israel.
5.Infectious Diseases Unit