1. Department of Urology, Kangbuk Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Statistics, Keimyung University, Daegu, Korea.
3. Department of Urology, College of Medicine, Yeungnam University, Daegu, Korea.
4. Medical Research Center, College of Medicine, Yeungnam University, Daegu, Korea.
5. Department of Data Science, Hanmi Pharm. Co., Ltd., Seoul, Korea.