I. G. Mega Putra, I. G. P. Surya, and A. S. I. M. Pratiwi, “High Level of Soluble FMS-Like Tyrosine Kinase-1 (sFlt-1) Serum in Pregnancy as a Risk Factor of Preeclampsia”, Bali Med J., vol. 5, no. 2, pp. 322–325, Jul. 2016.