1. University College London, London, United Kingdom;
2. Rambam Medical Center, Haifa, Israel;
3. Clinical Trial Service Unit, Oxford, United Kingdom;
4. Imperial Molecular Pathology Laboratory, Hammersmith Hospital, London, United Kingdom;
5. Mayo Clinic, Rochester, MN;
6. University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, OH;
7. University of Pennsylvania Abramson Cancer Center, Philadelphia, PA;
8. University Hospitals Bristol National Health Service Trust, Bristol, United Kingdom;
9. Nottingham University Hospitals, Nottingham, United Kingdom;
10. Leukaemia Research Cytogenetics Group, Northern Institute for Cancer Research, Newcastle University, Newcastle-upon-Tyne, United Kingdom;
11. Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY; and
12. Memorial Sloane Kettering Cancer Center, New York, NY