Liu, T., Li, N., Yan, Y. Q., Liu, Y., Xiong, K., Liu, Y., Xia, Q. M., Zhang, H., & Liu, Z. D. (2020). Recent advances in the anti-aging effects of phytoestrogens on collagen, water content, and oxidative stress. Phytotherapy research : PTR, 34(3), 435–447. https://doi.org/10.1002/ptr.6538