Handayani, Dian, Eti Poncorini Pamungkasari, and Bhisma Murti. “Effect of Vitamin D Deficiency on Gestational Diabetes Mellitus: A Meta-Analysis”. Journal of Epidemiology and Public Health 8, no. 3 (July 16, 2023): 312–322. Accessed May 10, 2024. https://jepublichealth.com/index.php/jepublichealth/article/view/601.