1. Quinn M, Babb P, Jones J, Allen E. Effect of screening on incidence of and mortality from cancer of cervix in England: evaluation based on routinely collected statistics. BMJ. 1999. 318:904–908.
2. Kyrgiou M, Koliopoulos G, Martin-Hirsch P, Arbyn M, Prendiville W, Paraskevaidis E. Obstetric outcomes after conservative treatment for intraepithelial or early invasive cervical lesions: systematic review and meta-analysis. Lancet. 2006. 367:489–498.
3. Crane JM, Delaney T, Hutchens D. Transvaginal ultrasonography in the prediction of preterm birth after treatment for cervical intraepithelial neoplasia. Obstet Gynecol. 2006. 107:37–44.
4. Nam KH, Kwon JY, Kim YH, Park YW. Pregancy outcome after cervical conization: risk factors for preterm delivery and the efficacy of prophylactic cercalge. J Gynecol Oncol. 2010. 21:225–229.
5. Shin MY, Seo ES, Choi SJ, Oh SY, Kim BG, Bae DS, et al. The role of prophylactic cerclage in preventing preterm delivery after electrosurgical conization. J Gynecol Oncol. 2010. 21:230–236.
6. Himes KP, Simhan HN. Time from cervical conization to pregnancy and preterm birth. Obstet Gynecol. 2007. 109(2 Pt 1):314–319.
7. Berghella V, Pereira L, Gariepy A, Simonazzi G. Prior cone biopsy: prediction of preterm birth by cervical ultrasound. Am J Obstet Gynecol. 2004. 191:1393–1397.
8. Jolley JA, Wing DA. Pregnancy management after cervical surgery. Curr Opin Obstet Gynecol. 2008. 20:528–533.
9. Zeisler H, Joura EA, Bancher-Todesca D, Hanzal E, Gitsch G. Prophylactic cerclage in pregnancy. Effect in women with a history of conization. J Reprod Med. 1997. 42:390–392.
10. Berghella V, Odibo AO, To MS, Rust OA, Althuisius SM. Cerclage for short cervix on ultrasonography: meta-analysis of trials using individual patient-level data. Obstet Gynecol. 2005. 106:181–189.
11. American College of Obstetrics and Gynecologist. ACOG practice bulletin: cervical insufficiency. Int J Gynaecol Obstet. 2004. 85:81–89.
12. Simhan HN, Krohn MA. First-trimester cervical inflammatory milieu and subsequent early preterm birth. Am J Obstet Gynecol. 2009. 200:377.e1–377.e4.
13. Meis PJ, Klebanoff M, Thom E, Dombrowski MP, Sibai B, Moawad AH, et al. Prevention of recurrent preterm delivery by 17 alpha-hydroxyprogesterone caproate. N Engl J Med. 2003. 348:2379–2385.
14. da Fonseca EB, Bittar RE, Carvalho MH, Zugaib M. Prophylactic administration of progesterone by vaginal suppository to reduce the incidence of spontaneous preterm birth in women at increased risk: a randomized placebo-controlled double-blind study. Am J Obstet Gynecol. 2003. 188:419–424.