1. Advanced Institute of Aging Science, Chonnam National University, Gwangju 61186, Republic of Korea
2. Department of Urology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
3. Department of Radiology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju 61469, Republic of Korea