Guohua Zeng: Department of Urology, Guangdong Key Laboratory of Urology, First Affiliated Hospital of Guangzhou Medical University, 1# Kangda Road, Haizhu, Guangzhou 510230, China.
E-mail:
[email protected] and
Kemal Sarica: Department of Urology, Biruni University, Medical School, Istanbul, Turkey.
E-mail:
[email protected]