Chhetri, N., Chhetri, A., Mukherjee, A., Bhattacharya, G. C., Sen, S., & Kumar, A. (2016). Pattern of Serum Vitamin D in Hospitalised Patients: A Retrospective Study. International Journal of Medical Research and Review, 4(5), 775-780. https://doi.org/10.17511/ijmrr.2016.i05.19