1. Wellcome/EPSRC Centre for Surgical and Interventional Sciences, London, W1W 7TS, UK
2. Department of Computer Science, University College London, London, WC1E 6BT, UK
3. Department of Medical Physics and Biomedical Engineering, University College London, London, WC1E 6BT, UK
4. Department of Pathology, UCL Cancer Institute, University College London, London, WC1E 6BT, UK
5. Department of Cellular Pathology, Royal Free Hospital, London, NW3 2QG, UK
6. Biobank and Pathology Translational Technology Platform, UCL Cancer Institute, University College London, London, WC1E 6BT, UK
7. Department of Surgical Biotechnology, University College London, London, WC1E 6BT, UK
8. National Physical Laboratory, Teddington, TW11 0LW, UK