Hurtado, Darnel Jasper, and Jose Benito Abraham. 2020. “The Clinical Safety and Efficacy of Upper Pole Access Percutaneous Nephrolithotomy (uPPCNL) for Inferior Pole Stones”. Philippine Journal of Urology 27 (1):1-5. https://pjuonline.com/index.php/pju/article/view/34.