Ghani, Tabassum, et al. “Relationship of Age and Parity With Bone Mineral Density Among Postmenopausal Women- A Study at Dhaka Medical College Hospital”. Bangladesh Journal of Obstetrics & Gynaecology, vol. 35, no. 1, Mar. 2020, pp. 15-19, doi:10.3329/bjog.v35i1.58258.