Shill, L. C., Purba, N. H., Sultana, M., Hasan, T., Rahman, M. and Sultana, N. (2019) “An update on osteoporosis research: effect of calcium plus vitamin D supplementation”, International Journal Of Community Medicine And Public Health, 6(9), pp. 4120–4128. doi: 10.18203/2394-6040.ijcmph20194028.