[1] Ayub Teaching Hosp, Neurol Dept, Abbottabad, Pakistan
[2] Gynaecol Jinnah Hosp, Abbottabad, Pakistan
[3] Rehman Med Inst, Neurol Dept, Peshawar, Pakistan
[4] Gajju Khan Med Coll, Neurol Dept, Swabi, Pakistan
[5] Rehman Med Inst Hayatabad, Neurol Dept, Peshawar, Pakistan