1. Wolfson Institute of Population Health, Queen Mary University of London
2. Beth Israel Deaconess Medical Centre, Harvard Medical School, Boston, Massachusetts, USA
3. Lewisham & Greenwich NHS Trust, London
4. Southampton General Hospital, Hampshire, England, UK
5. European Union of Medical Specialists (UEMS), Brussels, Belgium
6. Group Practice Dr. Haas/Dr. Engler, Klagenfurt, Germany
7. Head & Neck Cancer Department, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
8. General Surgery Department, Hospital da Luz Oeiras, Oeiras, Portugal
9. Imperial College London