Saha, P., S. Dasgupta, S. Sen, A. Kumar, and U. K. Biswas. “Patients With Type 2 Diabetes Have Reduced Levels of Plasma Vitamin D3 and Are Well Correlated With the Oxidative Stress Parameters”. Asian Journal of Medical Sciences, vol. 7, no. 3, Jan. 2016, pp. 35-40, doi:10.3126/ajms.v7i3.13922.