1. School of Molecular Biosciences, University of Glasgow, Glasgow G12 8QQ, U.K.
2. School of Biological Sciences, University of Edinburgh, Edinburgh, Scotland EH9 3BF, U.K.
3. College of Medicine and Veterinary Medicine, Institute for Regeneration and Repair, University of Edinburgh, 4-5 Little France Drive, Edinburgh EH16 4UU, U.K.
4. Edinburgh Cancer Research, Cancer Research UK Scotland Centre, Institute of Genetics and Cancer, University of Edinburgh, Crewe Road South, Edinburgh EH4 2XR, U.K.
5. X-Chem Inc., Montréal, Québec H4S 1Z9, Canada
6. Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Québec H3T 1J4, Canada
7. Centre for Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
8. Program in Molecular Medicine, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada