参考:
1. American College of Obstetricians and, Gynecologists (Feb 2014). "ACOG Practice Bulletin No.142: Cerclage for the management of cervical insufficiency". Obstetrics and gynecology. 123 (2 Pt 1): 372–9. doi:10.1097/01.AOG.0000443276.68274.cc. PMID 24451674.
2. Cervical assessment from Fetal Medicine Foundation. Retrieved Feb 2014.
3. Macdonald, R; Smith, P; Vyas, S (Sep 2001). "Cervical incompetence: the use of transvaginal sonography to provide an objective diagnosis". Ultrasound in Obstetrics & Gynecology. 18 (3): 211–6. doi:10.1046/j.1469-0705.2001.00459.x. PMID 11555448.
4. Cervical incompetence at Radiopedia. By Dr Praveen Jha and Dr Laughlin Dawes et al. Retrieved June 2014
5. Althuisius SM; Dekker GA; Hummel P; Bekedam DJ; van Geijn HP (Nov 2001). "Final results of the Cervical Incompetence Prevention Randomized Cerclage Trial (CIPRACT): therapeutic cerclage with bed rest versus bed rest alone". American Journal of Obstetrics & Gynecology. Academic Press. 185 (5): 1106–1112. doi:10.1067/mob.2001.118655. PMID 11717642.
6. "Cervical Incompetence – Protocol for Management" (PDF). PROTOCOL #40. Maternal Fetal Medicine, University of New Mexico. 2012-03-03. Archived from the original (PDF) on 2012-06-17.
7. Armarnik, S; Sheiner, E; Piura, B; Meirovitz, M; Zlotnik, A; Levy, A (April 2011). "Obstetric outcome following cervical conization". Archives of gynecology and obstetrics. 283 (4): 765–9. doi:10.1007/s00404-011-1848-3. PMID 21327802.
8. Zeisler, H; Joura, EA; Bancher-Todesca, D; Hanzal, E; Gitsch, G (July 1997). "Prophylactic cerclage in pregnancy. Effect in women with a history of conization". The Journal of reproductive medicine. 42 (7): 390–2. PMID 9252928.
9. Abdel-Aleem, H; Shaaban, OM; Abdel-Aleem, MA (May 31, 2013). "Cervical pessary for preventing preterm birth". The Cochrane Database of Systematic Reviews. 5: CD007873. doi:10.1002/14651858.CD007873.pub3. PMID 23728668.
10. Christiansen, Ole (2014). Recurrent pregnancy loss. Chichester, West Sussex, UK: John Wiley & Sons. pp. 98–99. ISBN 9780470672945. It is important to bear in mind that some clinical terms can cause great distress and even anger. The terms "blighted ovum" and "cervical incompetence" both imply blame. Cervical incompetence is better described as cervical weakness.