S. N., S. M., S. Dhinakaran, and N. N., “Comparison of one step glucose tolerance test (75 g GTT) and two step glucose tolerance test (100 g GTT) in screening and diagnosis of gestational diabetes mellitus”, Int J Reprod Contracept Obstet Gynecol, vol. 7, no. 12, pp. 4814–4818, Nov. 2018.