Alfky, Nehal A.A., Reham A. Mustafa, Firas S. Azzeh, and Eslam A. Header. 2017. “Protective Effect of Vitamin E in Combination With Vitamin D and Calcium Against Osteoporosis in Ovariectomized Rats”. Pakistan Journal of Nutrition 16 (3): 136–143. https://doi.org/10.3923/pjn.2017.136.143.