Youngsabanant, M., and S. Rabiab. “Potential Effect of Porcine Follicular Fluid (pFF) from Small-, Medium-, and Large-Sized Ovarian Follicles on HeLa Cell Line Viability”. Science, Engineering and Health Studies, vol. 14, no. 2, Aug. 2020, pp. 141-5, doi:10.14456/sehs.2020.13.