Omaña, Paulo, and Pedro Lantin. “Analysis of Risk Factors of Complications in Percutaneous Nephrolithotomy at the East Avenue Medical Center”. Philippine Journal of Urology 28, no. 2 (March 5, 2020): 90–96. Accessed June 27, 2025. https://pjuonline.com/index.php/pju/article/view/71.