Tahwinder Upile1,2,3,7
, Waseem Jerjes1,3
, Panagiotis Kafas4
, Sandeep U Singh1
, Holger Sudhoff5
, Jaspal Mahil1
, Ann Sandison6
and Colin Hopper1,3 
1
Head & Neck Centre, University College London Hospital, London, UK
2
Head and Neck Department, Charing Cross Hospital, London, UK
3
Department of Surgery, University College London Medical School, London, UK
4
Department of Oral Surgery and Radiology, School of Dentistry, Aristotle University, Thessaloniki, Greece
5
Department of Otolaryngology, Bielefeld University, Bielefeld, Germany
6
Department of Histopathology, Imperial College & Charing Cross Hospital, London, UK
7
The Royal National Throat, Nose and Ear Hospital, 330/332 Grays' Inn Road, London, WC1X 8EE, UK