1. Department of BiostatisticsClinical Trial CenterSoonchunhyang University Bucheon HospitalBucheonKorea
2. Department of Urology, Soonchunhyang University Bucheon HospitalSoonchuhyang University Medical CollegeBucheonKorea
3. Medical biotechnologySoonchunhyang UniversityAsanKorea
4. Pharmaceutical engineeringSoonchunhyang UniversityAsanKorea
5. Department of Urology, Soonchunhyang University HospitalSoonchuhyang University Medical CollegeSeoulKorea