1. Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
2. Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
3. Department of Urology, Central Hospital of Panyu District, Guangzhou, Guangdong, China
4. Wake Forest Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA