Wildanur, Sri, et al. “Programmed Death-Ligand 1 (PD-L1) and Ki-67 Labeling Index: Correlation With Tumor Grade and Recurrence”. Bioscientia Medicina : Journal of Biomedicine and Translational Research, vol. 9, no. 1, Oct. 2024, pp. 110-23, https://doi.org/10.37275/bsm.v9i1.1165.