Gadde, Ranjeeta, Chikkanayakanahalli Doddaiah Dayanand, and Shimoga Rangappa Sheela. “Maternal Serum Biochemical Indicators of Trophoblastic Cell and Endothelial Function at First Trimester of Pregnancy”. New Frontiers in Medicine and Medical Research Vol. 9 (August 24, 2021): 140–151. Accessed June 4, 2026. https://stm.bookpi.org/NFMMR-V9/article/view/3470.