1. University College London Hospital; London
2. Clinical Trial Service Unit; Oxford
3. Royal Free Hospital; University College London; London; UK
4. University Hospitals Case Medical Center; Cleveland; OH
5. Mayo Clinic; Rochester; MN
6. University of Pennsylvania; Philadelphia; PA; USA
7. University Hospitals Bristol NHS Foundation Trust; Bristol
8. Nottingham City Hospital; Nottingham
9. Northern Institute for Cancer Research; Newcastle University; Newcastle; UK
10. Rambam Medical Centre; Technion; Haifa; Israel
11. Memorial Sloan-Kettering Cancer Center; New York; NY; USA