Koirala, Sagar, et al. “Ultrasound Assessment of Women Presented During the First Trimester of Pregnancy in a Rural Teaching Hospital: First Trimester Ultrasound Assessment in Rural Nepal Hospital”. Journal of Karnali Academy of Health Sciences, vol. 8, no. 2, Sept. 2025, pp. 10-12, https://nepjol.info/index.php/jkahs/article/view/84634.