adnan.darr@nhs.net
Mr. Duncan J Bowyer – MBChB, FRCS (ORL-HNS), Department of Otolaryngology, Shrewsbury and Telford Hospital NHS Trust, UK. study conception and critical revision of article.
duncan.bowyer@sath.nhs.uk
Mr. Shahzada K Ahmed – BSc (Hons) DLO MBChB, FRCS (ORL-HNS), PhD, Department of Otolaryngology, University Hospitals Birmingham NHS Trust, UK. – study conception and critical revision of article.
shahz.ahmed@nhs.net
All authors have read and approved the paper.