title: Reply by the Authors.
authors.affiliation: Department of Urology, Santa Chiara Regional Hospital, Trento, Italy.
authors.forename: Tommaso
authors.initials: T
authors.lastname: Cai
authors.affiliation: Department of Urology, Oslo University Hospital and University of Oslo, Oslo, Norway.
authors.forename: Truls E
authors.initials: TE
authors.lastname: Bjerklund Johansen