CU 65. Renal access through the inferior calyx is associated with higher risk of severe bleeding after percutaneous nephrolithotomy - Tan, Jing; He, Leye; Jiang, Xianzheng; Jiang, Zhiqiang; Dai, Yinbo; Tang, Yuxin; Ying, Guangming; Wang, Jinrong (Translational Andrology and Urology, 2012)