Pujiyani, Honesty, Melyana Widyawati, and Asiswari Asiswari. “Risk Factors of Preeclampsia”. Jurnal Kesehatan Ibu dan Anak 12, no. 2 (January 5, 2019): 107-112. Accessed February 23, 2020. http://e-journal.poltekkesjogja.ac.id/index.php/kia/article/view/146.