1 Division of Surgery and Interventional Science, University College London, London, UK; UCL Cancer Institute, University College London, London, UK; ENT Department, Barts Health NHS Trust, London, UK.
2 UCL Cancer Institute, University College London, London, UK.
3 CRUK and UCL Cancer Trials Centre, University College London, London, UK.
4 Division of Surgery and Interventional Science, University College London, London, UK.
5 Norwich Medical School, University of East Anglia, Norwich, UK.
6 ENT Department, Wrightington, Wigan and Leigh NHS Foundation Trust, Wigan, UK.
7 ENT Department, Guy's Hospital, Guy's and St. Thomas' NHS Foundation Trust, London, UK.
8 Department of Otolaryngology, Manchester University NHS Foundation Trust, Manchester, UK.
9 Centre for Obesity Research, University College London, London, UK; Bariatric Centre for Weight Management and Metabolic Surgery, University College London Hospitals NHS Trust, London, UK; National Institute for Health Research, UCLH Biomedical Research Centre, London, UK.
10 Department of Otolaryngology, University of San Diego School of Medicine, San Diego, USA.
11 National Institute for Health Research, UCLH Biomedical Research Centre, London, UK; Barts Heart Centre, St. Bartholomew's Hospital, London, UK; Institute of Cardiovascular Sciences, University College London, UK.
12 The Norfolk Smell and Taste Clinic, Norfolk and Waveney ENT Service, UK.
13 Fifth Sense, UK.
14 Medical University of South Carolina, Charleston, SC, USA.
15 Norwich Medical School, University of East Anglia, Norwich, UK; The Norfolk Smell and Taste Clinic, Norfolk and Waveney ENT Service, UK.
16 Royal National ENT Hospital, University College London Hospitals NHS Trust, London, UK.