Nargesi, Shahin, Ayub Ghorbani, Ehsan Shirzadpour, Mahmoud Mohamadpour, Seyedeh Mousavi, and Mansour Amraei. 2018. “A Systematic Review and Meta-Analysis of the Association Between Vitamin D Deficiency and Gestational Diabetes Mellitus”. Biomedical Research and Therapy 5 (3), 2078-95. https://doi.org/10.15419/bmrat.v5i3.422.