Llanos, R. J. A. ., and J. B. A. . Abraham. “Comparative Analysis of Blood Loss and Transfusion Requirements Among Patients With Staghorn Calculus Undergoing Percutaneous Nephrolithotomy Versus Open Stone Surgery in National Kidney and Transplant Institute: 2018-2019”. Philippine Journal of Urology, vol. 33, no. 01, June 2023, https://pjuonline.com/index.php/pju/article/view/165.