[1] Riphah Int Univ, Fac Rehab & Allied Hlth Sci, Islamabad, Pakistan
[2] Riphah Int Univ, Fac Rehab & Allied Hlth Sci, Dept Speech Language Pathol, Islamabad, Pakistan
[3] Capital Hosp PGMI, Otolaryngol, Islamabad, Pakistan
[4] Capital Hosp PGMI, Islamabad, Pakistan
[5] Capital Hosp, Dept Otorhinolaryngol, G 6-2, Islamabad, Pakistan