AB141. Removal of numerous vesical magnetic balls with a self-made magnetic sheath - Li, Huizhen; Xu, Chuanliang; Zeng, Shuxiong; Zhang, Zhensheng; Lu, Xin; Wei, Rongchao; Zhao, Junjie; Yang, Bo; Sun, Yinghao (Translational Andrology and Urology, 2014)