1 Department of Urology, Luzerner Kantonsspital, Lucerne, Switzerland.
2 Department of Urology, Luzerner Kantonsspital, Lucerne, Switzerland; Department of Urology, Urological Research Institute, Vita-Salute University, San Raffaele Scientific Institute, Milan, Italy; Department of Urology, Institut Mutualiste Montsouris and Université Paris Descartes, Paris, France.
3 Department of Urology, Urological Research Institute, Vita-Salute University, San Raffaele Scientific Institute, Milan, Italy; Department of Urology, Institut Mutualiste Montsouris and Université Paris Descartes, Paris, France.
4 Department of Urology, Institut Mutualiste Montsouris and Université Paris Descartes, Paris, France.
5 Department of Urology, Institut Mutualiste Montsouris and Université Paris Descartes, Paris, France. Electronic address: rafael.sanchez-salas@imm.fr.