Affiliation: | a Department of Uro-Neurology, National Hospital for Neurology and Neurosurgery, University College London Hospitals National Health Service Foundation Trust, London, United Kingdom b Department of Urology, Guys' and St. Thomas' Hospitals National Health Service Foundation Trust, London, United Kingdom c Second Department of Urology, Aristotle University of Thessaloniki, Papageorgiou Hospital, Thessaloniki, Greece |