1. Department of Urology, RadboudUMC, Nijmegen, the Netherlands
2. Imperial College NHS Healthcare, National Hospital of Neurology and Neurosurgery, London, United Kingdom
3. Department of Urology, Maastricht University Medical Center, Maastricht, the Netherlands
4. Department of Urology, UMC Utrecht, Utrecht, the Netherlands
5. Department of Uro-Neurology, National Hospital of Neurology and Neurosurgery, London, United Kingdom