[1] King Khalid Univ, Coll Med Abha, Family & Community Med Dept, Abha, Saudi Arabia
[2] Abha Children Hosp, Aseer Cent Hosp, Cent Hosp, Airway Laryngol Unit Aseer, Abha, Saudi Arabia
[3] Armed Forced Hosp Southern Reg, Otorhinolaryngol Head & Neck Surg, Khamis Mushait, Saudi Arabia
[4] Family Med, Abha, Saudi Arabia
[5] King Khalid Univ, Abha, Saudi Arabia
[6] Alexandria Univ, High Inst Publ Hlth, Trop Hlth Dept, Alexandria, Egypt