1. Department of Clinical Oncology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London W6 8RF, UK
2. Sleep Education and Research Laboratory, UCL Institute of Education, London WC1H 0AA, UK
3. Department of Psychology and Cognitive Science, University of Trento, 38068 Rovereto, Italy
4. Department of Surgery and Cancer, Imperial College London, London W6 8RF, UK
5. Imperial Urology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London W2 1NY, UK