1. Head and Neck Unit, The Royal Marsden NHS Foundation Trust , London, UK
2. The Institute of Cancer Research, National Institute of Health Research Biomedical Research Centre , London, UK
3. Psychiatry Department, Basurto University Hospital. Osakidetza, Basque Health Service , Bilbao, Spain
4. Biobizkaia Health Research Institute, OSI Bilbao-Basurto , Bilbao, Spain
5. Centro de Investigación en Red de Salud Mental (CIBERSAM) , Madrid, Spain
6. Lung and Head & Neck Tumors Unit. Medical Oncology Department, Vall d‘Hebron University Hospital , Barcelona, Spain
7. Vall d’Hebron Institute of Oncology (VHIO) , Barcelona, Spain
8. Radiotherapy Department, Cruces University Hospital , Barakaldo, Spain
9. Biobizkaia Health Research Institute, OSI Ezkerraldea Enkarterri Cruces , Barakaldo, Spain
10. Faculty of Medicine, University of the Basque Country , Leioa, Spain
11. Neuroscience Department, University of the Basque Country (UPV/EHU) , Leioa, Spain
12. Department of Psychiatry, University of Oxford , Oxford, UK