Karki, S, KS Joshi, SR Tamrakar, S Regmi, and K Khanal. “Nuchal Translucency in Normal Fetus and Its Variation With Increasing Crown Rump Length (Crl) and Gestational Age”. Kathmandu University Medical Journal 11, no. 4 (September 23, 2015): 282–286. Accessed December 5, 2025. https://www.nepjol.info/index.php/KUMJ/article/view/12522.