title: Author Reply.
authors.affiliation: Department of Surgical and Perioperative Sciences, Urology and Andrology, Umeå University, Umeå, Sweden.
authors.forename: Börje
authors.initials: B
authors.lastname: Ljungberg
authors.affiliation: Department of Surgical and Perioperative Sciences, Urology and Andrology, Umeå University, Umeå, Sweden.
authors.forename: Oskar
authors.initials: O
authors.lastname: Hedin
authors.affiliation: Department of Urology, Sahlgrenska University Hospital, Gothenburg, Sweden.
authors.forename: Sven
authors.initials: S
authors.lastname: Lundstam
authors.affiliation: Department of Urology, Skåne University Hospital, Malmö, Sweden.
authors.forename: Åsa
authors.initials: Å
authors.lastname: Warnolf
authors.affiliation: Department of Urology, Skåne University Hospital, Malmö, Sweden.
authors.forename: Annika
authors.initials: A
authors.lastname: Mandahl Forsberg
authors.affiliation: Department of Urology, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway.
authors.forename: Karin M
authors.initials: KM
authors.lastname: Hjelle
authors.affiliation: Department of Urology, University of Munich, Munich, Germany.
authors.forename: Christian G
authors.initials: CG
authors.lastname: Stief
authors.affiliation: Department of Urology, University of Munich, Munich, Germany.
authors.forename: Claudia
authors.initials: C
authors.lastname: Borlinghaus
authors.affiliation: Department of Urology, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway.
authors.forename: Christian
authors.initials: C
authors.lastname: Beisland
authors.affiliation: Department of Urology, University of Munich, Munich, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Staehler