A Study of Percutaneous Nephrolithotomy (PCNL) & Grading the Complexity of PCNL using Modified Guys Stone Score. JRAAS [Internet]. 2026 Oct. 27 [cited 2026 Nov. 3];41(2):1-9. Available from: https://internationalmedicalpublishing.com/index.php/JRAAS/article/view/361