Dr. Zulfiqar Ali Khan, et al. “First-Trimester Uterine Artery Doppler and PAPP-A Levels As Predictors of Pre-Eclampsia in a South Asian Population; Mardan City, Pakistan”. NUST Journal of Natural Sciences, vol. 9, no. 3, Sept. 2024, pp. 71-79, doi:10.53992/njns.v9i3.198.