1. Department of Oncology, Guy’s and St Thomas’ NHS Foundation Trust, London SE1 9RT, UK
2. School of Cancer & Pharmaceutical Sciences, King’s College London, London WC2R 2LS, UK
3. UCL Medical School, University College London, London WC1E 6BT, UK
4. Bristol Medical School, University of Bristol, Bristol BS8 1QU, UK
5. GKT School of Medicine, King’s College London, London WC2R 2LS, UK
6. School of Medicine, Imperial College London, London SW7 2DD, UK
7. Royal Surrey County Hospital, Guildford GU2 7XX, UK