Specialist Registrar, Department of Otorhino-laryngology - Head & Neck Surgery,
King Saud University, Riyadh, Saudi Arabia.
Corresponding Author for proof:
Dept. of ENT,
King Abdulaziz University Hospital
P.O.Box-245,
Riyadh 11411, KSA.
966 1 4786100 ext.1420
Email: yasinss.kauh@yahoo.com
