Cai, T., Yang, Z.-Y., Nie, L., Zhen, J.-X., Deng, L., & Zhou, Z. (2017). Association between vitamin D receptor BsmI gene polymorphism and periodontitis: a meta-analysis in a single ethnic group. Cellular and Molecular Biology, 63(11), 1–4. https://doi.org/10.14715/cmb/2017.63.11.1