1. The Warrell Unit, St Mary's Hospital; Manchester University NHS Foundation Trust; Manchester UK
2. Population Health Sciences Institute; Newcastle University; Newcastle upon Tyne UK
3. National Institute for Health Research (NIHR) Innovation Observatory; Newcastle University; Newcastle Upon Tyne UK
4. Division of Urology; University of Cape Town; Cape Town South Africa
5. Department of Urology; Freeman Hospital; Newcastle-upon-Tyne UK