MENDOZA, Jonathan; PAGTAKHAN, Danison; ABRAHAM, Jose Benito. Comparative Analysis of the Efficacy and Safety Profile of Upper Calyceal versus Lower Calyceal Access in the Percutaneous Nephrolithotomy (PCNL): A Retrospective Cross-sectional Study. Philippine Journal of Urology, [S. l.], v. 27, n. 1, p. 6–10, 2020. Disponível em: https://pjuonline.com/index.php/pju/article/view/35. Acesso em: 27 jun. 2025.