Fagotti, Lorenzo, Marcos Balbino, Thaís Bispo Gonzalez Truffa, Carolina Susanna, Javier Calvo-Marin, Juan Carlos M Fuentes B, Jose María Carrasco Rueda, and Luiz Guilherme Villares da Costa. 2016. “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”. Principles and Practice of Clinical Research 2 (1). https://journal2.teste.pro.br/index.php/ppcrjournal/article/view/27.