Mustafa, Reham A., Nehal A.A. Alfky, Haifa H. Hijazi, Eslam A. Header, and Firas S. Azzeh. 2018. “Biological Effect of Calcium and Vitamin D Dietary Supplements Against Osteoporosis in Ovariectomized Rats”. Progress in Nutrition 20 (1): 86-93. https://doi.org/10.23751/pn.v20i1.5223.