1. Department of Urology, Chonbuk National University Medical School, Jeonju, Korea.
2. Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Jeonju, Korea.
3. Department of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Institute of Andrology, Shanghai, China.
4. Clinical Trial Center for Medical Devices, Chonbuk National University Hospital, Jeonju, Korea.