Kannayan, L., N. Shamim, A. Arpana, M. K. Mudigubba, and S. B. “Association of Serum Homocysteine Levels With the Development of Preeclampsia”. Nepal Journal of Obstetrics and Gynaecology, vol. 15, no. 2, Nov. 2020, https://nepjol.info/index.php/NJOG/article/view/32896.