Marwah S, Sharma S, Kaur H, Gupta M, Goraya S. Surveillance of congenital malformations and their possible risk factors in a teaching hospital in Punjab. Int J Reprod Contracept Obstet Gynecol [Internet]. 2016 Dec. 24 [cited 2025 Oct. 7];3(1):162-7. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/808