C. M. Dela Victoria, J. M. S. . Flor, J. P. A. . Aldana, D. P. . Serrano, and M. C. M. . Lapitan, “Determination of Factors Affecting Stone Free Rates of Primary Percutaneous Nephrolithotripsy (PCNL) in a Tertiary Government Hospital”, PJU, vol. 32, no. 01, Nov. 2022.