Hurtado DJ, Abraham JB. The Clinical Safety and Efficacy of Upper Pole Access Percutaneous Nephrolithotomy (uPPCNL) for Inferior Pole Stones. PJU [Internet]. 2020Feb.16 [cited 2024Apr.25];27(1):1-5. Available from: https://pjuonline.com/index.php/pju/article/view/34