1. Head and Neck Medical Oncology Unit Fondazione IRCCS Istituto Nazionale dei Tumori Milan Italy
2. Department of Otolaryngology UPMC Hillman Cancer Center Pittsburgh Pennsylvania USA
3. Department of Epidemiology AstraZeneca Gaithersburg Maryland USA
4. Global Medicine Development AstraZeneca Cambridge UK
5. Global Medicine Development AstraZeneca Gaithersburg Maryland USA
6. The Institute of Cancer Research, The Royal Marsden NHS Foundation Trust National Institute of Health Research Biomedical Research Centre London UK
7. Section of Medical Oncology, Department of Internal Medicine Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens Athens Greece
8. Department of Oncology and Hemato‐Oncology University of Milan Italy