1. Department of Urology, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
2. Department of Urology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
3. Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
4. Biomedical research institute, Pusan National University Hospital, Busan, Republic of Korea