Chawanpaiboon, Saifon, and Vitaya Titapant. “Ultrasound Assessments of Missed Abortion in Early Pregnancy”. Siriraj Medical Journal 54, no. 5 (May 1, 2002): 306–308. accessed September 29, 2026. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/265249.