Wibowo, N., R. Irwinda, and Y. Handoko. “Vitamin D₃ Levels in the Maternal Serum, Cord Blood, and Placenta of Preeclamptic Pregnant Women”. Medical Journal of Indonesia, vol. 29, no. 2, June 2020, pp. 149-53, doi:10.13181/mji.oa.202951.