Kour, Gurpreet, and Sandeep Kour. “Serum β-HCG Levels Between 13-20 Weeks Gestation Can Predict Development of Pregnancy Induced Hypertension”. Nepal Journal of Obstetrics and Gynaecology 13, no. 1 (November 12, 2018): 12–14. Accessed June 30, 2024. https://nepjol.info/index.php/NJOG/article/view/21609.