Monoarfa, Y., B. Wirdjatmanto, E. Gumilar, and A. R. Thaha. “The Effect of Selenium and Multiple Micronutrient Administration During Periconceptional Periodon Selenium Status, Malondialdehyde (MDA), sFlt1, and PIGF to Prevent Preeclampsia at the Molecular Level”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 31, no. 1, Jan. 2017, pp. 260-8, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6794.