[1] Umm Al Qura Univ, Med & Surg, Mecca, Saudi Arabia
[2] King Abdulaziz Specialist Hosp, Otorhinolaryngol Head & Neck Surg, Taif, Saudi Arabia
[3] King Fahad Gen Hosp, Otolaryngol Head & Neck Surg, Jeddah, Saudi Arabia
[4] King Fahad Armed Forces Hosp, Otolaryngol Head & Neck Surg, Jeddah, Saudi Arabia
[5] Umm Al Qura Univ, Community Med & Pilgrims Healthcare, Mecca, Saudi Arabia
[6] Umm Al Qura Univ, Coll Med, Mecca, Saudi Arabia