1. Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK
2. Laboratory of Haematopoietic Stem Cell and Leukaemia Biology, Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
3. Stem Cell Program, Division of Hematology/Oncology, Boston Children’s Hospital, Boston, MA
4. Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA
5. Institute for Stem Cell Research, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
6. Georg-Speyer-Haus and Goethe University, Frankfurt, Germany
7. Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, Edinburgh, UK
8. Medical Research Council Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford, UK
9. Wellcome Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, UK