1. Department of Cellular Pathology; University Hospital of Wales/Cardiff University School of Medicine; Cardiff United Kingdom
2. Molecular Haematology and Cancer Biology Unit; Institute of Child Health; University College London; London United Kingdom
3. Cancer Research UK Clinical Trials Unit; Sir Robert Aitken Building; School of Cancer Sciences; University of Birmingham; Birmingham United Kingdom
4. Department of Histopathology; Great Ormond Street Hospital NHS Foundation Trust; London United Kingdom