Suhartini. “Factors Influencing the Occurrence of Preeclampsia in Pregnant Women at Sibuhuan Hospital, Barumun District, Regency The Old Field in 2022”. Science Midwifery 10, no. 5 (November 15, 2022): 3713–3723. Accessed May 26, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/918.