1. UCL/GOSH Institute of Child Health, Cancer Section, 30 Guilford Street, London WC1N 1EH, UK.
2. Program for Computational and Systems Biology, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
3. Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA.
4. UCL Cancer Institute, 72 Huntley St., Fitzrovia, London WC1E 6AG, UK.
5. Department of Haematology and Oncology, Great Ormond Street Hospital, London WC1N 3JH, UK.
6. Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.