Kant, S., Haldar, P., Gupta, A., & Lohiya, A. (2019). Serum calcium level among pregnant women and its association with pre-eclampsia and delivery outcomes: A cross-sectional study from North India. Nepal Journal of Epidemiology, 9(4), 795–803. https://doi.org/10.3126/nje.v9i4.23150