Prabha R, Kumar S, Kumar M. Nomogram of nasal bone length at 11-14 week of gestation in Indian women and their follow up till delivery. Int J Reprod Contracept Obstet Gynecol [Internet]. 2016 Dec. 14 [cited 2025 Sep. 25];5(11):3704-11. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/310