Tahwinder Upile1,2,3
, Waseem Jerjes2,3
, Panagiotis Kafas4
, Shash Hirani1
, Sandeep U Singh1,2
, Marcel Guyer1
, Melissa Bentley1
, Holger Sudhoff5
and Colin Hopper2,3 
1
The Professorial Unit, Royal National Throat, Nose and Ear Hospital, London, UK
2
Head & Neck Cancer Centre, University College London 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, Thessalonica, Greece
5
Department of Otolaryngology, Bielefeld University, Bielefeld, Germany