1 Department of Surgery and Cancer, Faculty of Medicine, St Mary's Hospital, Imperial College London, London W2 1NY, UK; Department of Epidemiology and Environmental Health, University at Buffalo, NY, USA; School of Health and Sport Sciences, University of Suffolk, Ipswich, UK. Electronic address: t.soukup@ic.ac.uk.
2 Department of Surgery, University of Cambridge, Cambridge, UK.
3 School of Health and Sport Sciences, University of Suffolk, Ipswich, UK; Department of Urology, Barts Health NHS Trust, London, UK; Barts Cancer Institute, Queen Mary University of London, London, UK; University College London Hospitals, London, UK.