1. Department of Urology, the Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi, China
2. Department of Urology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
3. Department of Radiology, the Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi, China
4. Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA