1 Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
2 Department of Interventional Radiology, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China.
3 Department of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
4 Department of Andrology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China.
5 Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
6 Department of Andrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
7 Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China. xiey236@mail.sysu.edu.cn.
8 Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China. luoch37@mail.sysu.edu.cn.
9 Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China. zhengfuf@mail.sysu.edu.cn.