Comparison of Percutaneous Nephrolithotomy with Retrograde Intrarenal Surgery Techniques in treatment of renal lower calyceal stones. Adv.med.j. [Internet]. 2022 Jul. 26 [cited 2025 Dec. 6];7(1):40-6. Available from: https://amj.khcms.edu.krd/index.php/main/article/view/45