Ausaf Khan

otolaryngology otology ent otomicroscopy ear surgery ear external ear endoscope mastoid abscess mastoiditis mastoid subdural abscess labyrinthitis facial nerve medical students medical grommet myringotomy glue ear otitis acute otitis media preauricular sinus pseudomonas otitis externa furunculosis external auditory canal pinna anatomy orbital sinus surgery paranasal sinuses nose orbital complications polyps sinusitis endoscopic sinus surgery fess complications khan ausaf hamdard karachi tarabichi otoendoscopy innovation in ear surgery tympanoplasty endoscopic ear srugery endoscopy