Chawanpaiboon, S., & Sutantawibul, A. (2012). Comparison of Pregnancy Outcome between Elective and Emergency McDonald Cervical Cerclage in Cervical Insufficiency: 3-Year Experience (2006-2008) in Siriraj Hospital. Thai Journal of Obstetrics and Gynaecology, 18(1), 6–11. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/1441