Bairwa, B. K., Sagar, M., Gupta, R. C., & Gupta, M. (2019). A comparative study of salivary and serum calcium and alkaline phosphatase in patients with osteoporosis. International Journal of Research in Medical Sciences, 7(6), 2412–2416. https://doi.org/10.18203/2320-6012.ijrms20192539