Rajesh A, Muralidharan V. Serum beta hCG in early second trimester as a predictor of gestational hypertension. Int J Reprod Contracept Obstet Gynecol [Internet]. 2018 May 26 [cited 2025 Nov. 11];7(6):2355-9. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/4796