S. SM, R. SK, . N. Role of vitamin D in prevention of adverse maternal and perinatal outcome: a randomized controlled trial. Int J Reprod Contracept Obstet Gynecol [Internet]. 2019 May 28 [cited 2025 Oct. 27];8(6):2348-53. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/6529