Li, L., X. L. Yao, X. L. He, X. J. Liu, W. C. Wu, W. Kuang, and M. Tang. “Role of Mechanical Strain and Estrogen in Modulating Osteogenic Differentiation of Mesenchymal Stem Cells (MSCs) from Normal and Ovariectomized Rats”. Cellular and Molecular Biology, vol. 59, no. 2, Nov. 2013, pp. 1889-93, https://cellmolbiol.org/index.php/CMB/article/view/473.