1. Guy's, King's and St. Thomas' School of Medicine, London, United Kingdom
2. Department of Radiological Sciences, Guy's, King's and St. Thomas' School of Medicine, London, United Kingdom
3. Department of Surgery, Guy's and St. Thomas' Hospital Trust, London, United Kingdom
4. ENT Department, Guy's Hospital, London, United Kingdom
5. Division of Medical & Molecular Genetics, Guy's, King's and St. Thomas' School of Medicine, London, United Kingdom