“A Randomized Double-Blinded Superiority Trial to Compare the Efficacy of Vitamin D3 and Calcium versus placebo in Prevention of Hip Fractures in Elderly Women”, PPCR, vol. 2, no. 1, Mar. 2016, Accessed: May 01, 2024. [Online]. Available: https://journal.ppcr.org/index.php/ppcrjournal/article/view/27