“Analysis of Pixel Values in Lateral Os Sacrum Radiographic Examinations Using Various Virtual Grid Ratios”. JPK : Jurnal Proteksi Kesehatan 14, no. 1 (July 17, 2025): 41–46. Accessed February 2, 2026. https://jurnal.pkr.ac.id/index.php/JPK/article/view/1124.