Zhang, Ci, Tianpeng Wu, and Nan Shen. “Effect of Platelet-Rich Plasma Combined With Tranexamic Acid in the Treatment of Melasma and Its Effect on the Serum Levels of Vascular Endothelial Growth Factor, Endothelin-1 and Melatonin”. Pakistan Journal of Medical Sciences 38, no. 8 (October 14, 2022). Accessed June 22, 2024. https://pjms.org.pk/index.php/pjms/article/view/6786.