Alam, Md Rafiqul, et al. “Gross and Histomorphologic Study of the Umbilical Cord in Pre-Gestational Diabetes Mellitus and Gestational Diabetes Mellitus”. Bangladesh Journal of Anatomy, vol. 12, no. 1, Mar. 2015, pp. 25-29, doi:10.3329/bja.v12i1.22615.