Dong S-W, Hu S-W, Liu S-P, Wu C-C, Lin C-T, Chen K-C, Ho C-H. A Safe and Effective Two-Step Tract Dilation Technique in Totally Ultrasound-Guided Percutaneous Nephrolithotomy. Urol J [Internet]. 2022 Dec. 6 [cited 2024 Apr. 26];19(06):420-6. Available from: https://journals.sbmu.ac.ir/urolj/index.php/uj/article/view/7205