Svigos, John. “Trans-Abdominal Cervical Cerclage Revisited”. Clinical Journal of Obstetrics and Gynecology 2, no. 1 (June 18, 2019): 017–024. Accessed February 1, 2026. https://www.obstetricgynecoljournal.com/index.php/cjog/article/view/cjog-aid1019.