title: Reply by the Authors.
authors.affiliation: Department of Health Screening and Promotion Center, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: Yoon Soo
authors.initials: YS
authors.lastname: Kyung
authors.affiliation: Department of Urology, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: Dalsan
authors.initials: D
authors.lastname: You
authors.affiliation: Department of Urology, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: In Gab
authors.initials: IG
authors.lastname: Jeong
authors.affiliation: Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: Seungbong
authors.initials: S
authors.lastname: Han
authors.affiliation: Department of Health Screening and Promotion Center, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: Hong-Kyu
authors.initials: HK
authors.lastname: Kim
authors.affiliation: Department of Urology, Asan Medical Center, University of Ulsan College of Medicine Seoul, Republic of Korea.
authors.forename: Choung-Soo
authors.initials: CS
authors.lastname: Kim