title: Author Reply.
authors.affiliation: Division of Urology, Department of Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
authors.forename: Christopher J D
authors.initials: CJ
authors.lastname: Wallis
authors.affiliation: Division of Urology, Department of Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
authors.forename: Raj
authors.initials: R
authors.lastname: Satkunasivam