Puteri, Violita Dianatha, et al. “Analysis of Factors Related to Bone Density in Trimester III Pregnant Women in The Working Area of Community Health Center of Andalas Padang”. Science Midwifery, vol. 9, no. 2, Mar. 2021, pp. 285-8, https://midwifery.iocspublisher.org/index.php/midwifery/article/view/97.