1. Imperial College, London, UK
2. Amsterdam University Medical Centers, The Netherlands
3. Imperial College NHS Healthcare Trust, London, UK
4. University Hospital Southampton NHS Trust, Southampton, UK
5. Hampshire Hospitals NHS Foundation Trust, UK
6. BMI The Hampshire Clinic, Basingstoke, UK
7. Sunderland Royal Hospital, Sunderland, UK
8. University College London NHS Foundation Trust, London, UK
9. Wrexham Maelor Hospital, Wrexham, UK
10. Royal Surrey NHS Foundation Trust, Guildford, UK
11. BMI Mount Alvernia Hospital, Guildford, UK
12. Princess Alexandra Hospital NHS Trust, Harlow, UK
13. Princess Grace Hospital, London, UK
14. King Edward VII Hospital, London, UK
15. JB Medical Limited, Sudbury, UK
16. Department of Urology, Cromwell Hospital, London, UK