Lai, Dehui, Wei Xu, Meiling Chen, Yongzhong He, Xun Li, Ming Sheng, and Xingrong Zeng. “Minimally Invasive Percutaneous Nephrolithotomy With a Novel Vacuum-Assisted Access Sheath for Obstructive Calculous Pyonephrosis ：A Randomized Study”. Urology Journal 17, no. 05 (July 21, 2020): 474–479. Accessed April 26, 2024. https://journals.sbmu.ac.ir/urolj/index.php/uj/article/view/5577.