Al-Makki, A. et al. 2019. Ergocalciferol Versus Cholecalciferol in Non-Dialysis Dependent Chronic Kidney Disease Patients: A Small Retrospective Cohort Study. Journal of Pharmacy & Pharmaceutical Sciences. 22, 1 (Dec. 2019), 593–598. DOI:https://doi.org/10.18433/jpps30581.