title: Reply by the Authors.
authors.affiliation: Department of Urology and Stone Center, Takii-Hospital of Kansai Medical University, Moriguchi, Osaka, Japan.
authors.forename: Takaaki
authors.initials: T
authors.lastname: Inoue
authors.affiliation: Department of Urology, Hirakata-Hospital of Kansai Medical University, Hirakata, Osaka, Japan.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Matsuda