REFERENCES
1. Hamilton BE, Martin JA, Osterman MJK. Births: Provisional data for 2019. National Center for Health Statistics - Vital Statistics Rapid Release. 2020;No 8.
2. Howson CP, Kinney MV, McDougall L, Lawn JE. Born too soon: preterm birth matters. Reprod Health. 2013;10 Suppl 1(Suppl 1):S1.
3. Friedrich MJ. Premature Birth Complications Top Cause of Death in Children Younger Than 5 Years. JAMA. 2015;313(3):235.
4. Swamy GK, Ostbye T, Skjaerven R. Association of preterm birth with long-term survival, reproduction, and next-generation preterm birth. Jama. 2008;299(12):1429-36.
5. Wilson-Costello D, Friedman H, Minich N, Fanaroff AA, Hack M. Improved survival rates with increased neurodevelopmental disability for extremely low birth weight infants in the 1990s. Pediatrics. 2005;115(4):997-1003.
6. ACOG. ACOG Practice Bulletin No. 234: Prediction and Prevention of Spontaneous Preterm Birth. Obstet Gynecol. 2021;138(2):e65-e90.
7. Hassan SS, Romero R, Vidyadhari D, Fusey S, Baxter JK, Khandelwal M, et al. Vaginal progesterone reduces the rate of preterm birth in women with a sonographic short cervix: a multicenter, randomized, double-blind, placebo-controlled trial. Ultrasound Obstet Gynecol. 2011;38(1):18-31.
8. Iams JD, Goldenberg RL, Meis PJ, Mercer BM, Moawad A, Das A, et al. The length of the cervix and the risk of spontaneous premature delivery. National Institute of Child Health and Human Development Maternal Fetal Medicine Unit Network. N Engl J Med. 1996;334(9):567-72.
9. Mella MT, Berghella V. Prediction of preterm birth: cervical sonography. Semin Perinatol. 2009;33(5):317-24.
10. Son M, Miller ES. Predicting preterm birth: Cervical length and fetal fibronectin. Semin Perinatol. 2017;41(8):445-51.
11. Afzali N, Mohajeri M, Malek A, Alamatian A. Cervical gland area: a new sonographic marker in predicting preterm delivery. Arch Gynecol Obstet. 2012;285(1):255-8.
12. Marsoosi V, Pirjani R, Asghari Jafarabadi M, Mashhadian M, Ziaee S, Moini A. Cervical gland area as an ultrasound marker for prediction of preterm delivery: A cohort study. Int J Reprod Biomed. 2017;15(11):729-34.
13. Sekiya T, Ishihara K, Yoshimatsu K, Fukami T, Kikuchi S, Araki T. Detection rate of the cervical gland area during pregnancy by transvaginal sonography in the assessment of cervical maturation. Ultrasound Obstet Gynecol. 1998;12(5):328-33.
14. Pires CR, Moron AF, Mattar R, Diniz AL, Andrade SG, Bussamra LC. Cervical gland area as an ultrasonographic marker for preterm delivery. Int J Gynaecol Obstet. 2006;93(3):214-9.
15. Read CP, Word RA, Ruscheinsky MA, Timmons BC, Mahendroo MS. Cervical remodeling during pregnancy and parturition: molecular characterization of the softening phase in mice. Reproduction. 2007;134(2):327-40.
16. Nott JP, Bonney EA, Pickering JD, Simpson NAB. The structure and function of the cervix during pregnancy. Translational Research in Anatomy. 2016;2:1-7.
17. Larsen B, Hwang J. Progesterone Interactions with the Cervix: Translational Implications for Term and Preterm Birth. Infectious Diseases in Obstetrics and Gynecology. 2011;2011:353297.
18. Kahyaoglu S, Kahyaoglu I, Kaymak O, Sagnic S, Mollamahmutoglu L, Danisman N. Can transvaginal ultrasonographic evaluation of the endocervical glandular area predict preterm labor among patients who received tocolytic therapy for threatened labor: a cross-sectional study. J Matern Fetal Neonatal Med. 2013;26(9):920-5.
19. Yoshimatsu K, Sekiya T, Ishihara K, Fukami T, Otabe T, Araki T. Detection of the cervical gland area in threatened preterm labor using transvaginal sonography in the assessment of cervical maturation and the outcome of pregnancy. Gynecol Obstet Invest. 2002;53(3):149-56.
20. Dziadosz M, Bennett TA, Dolin C, West Honart A, Pham A, Lee SS, et al. Uterocervical angle: a novel ultrasound screening tool to predict spontaneous preterm birth. Am J Obstet Gynecol. 2016;215(3):376.e1-7.
21. Kagan KO, Sonek J. How to measure cervical length. Ultrasound Obstet Gynecol. 2015;45(3):358-62.
22. Vickers AJ, Cronin AM, Begg CB. One statistical test is sufficient for assessing new predictive markers. BMC Med Res Methodol. 2011;11:13.
23. Demler OV, Pencina MJ, D’Agostino RB, Sr. Misuse of DeLong test to compare AUCs for nested models. Stat Med. 2012;31(23):2577-87.
24. Khalifeh A, Berghella V. Universal cervical length screening in singleton gestations without a previous preterm birth: ten reasons why it should be implemented. Am J Obstet Gynecol. 2016;214(5):603.e1-5.
25. Esplin MS, Elovitz MA, Iams JD, Parker CB, Wapner RJ, Grobman WA, et al. Predictive Accuracy of Serial Transvaginal Cervical Lengths and Quantitative Vaginal Fetal Fibronectin Levels for Spontaneous Preterm Birth Among Nulliparous Women. JAMA. 2017;317(10):1047-56.
26. Hughes K, Kane SC, Araujo Junior E, Da Silva Costa F, Sheehan PM. Cervical length as a predictor for spontaneous preterm birth in high-risk singleton pregnancy: current knowledge. Ultrasound Obstet Gynecol. 2016;48(1):7-15.
27. Lim K, Butt K, Crane JM. No. 257-Ultrasonographic Cervical Length Assessment in Predicting Preterm Birth in Singleton Pregnancies. J Obstet Gynaecol Can. 2018;40(2):e151-e64.
28. Owen J, Yost N, Berghella V, Thom E, Swain M, Dildy GA, 3rd, et al. Mid-trimester endovaginal sonography in women at high risk for spontaneous preterm birth. Jama. 2001;286(11):1340-8.
29. Asakura H, Fukami T, Kurashina R, Tateyama N, Doi D, Takeshita T. Significance of cervical gland area in predicting preterm birth for patients with threatened preterm delivery: comparison with cervical length and fetal fibronectin. Gynecol Obstet Invest. 2009;68(1):1-8.
30. Minami Y, Sekiya T, Nishizawa H, Miyazaki J, Noda Y, Ishii R, et al. Relationship between detection of the cervical gland area during the late third trimester and necessity for induction of labor to prevent post-term delivery. J Med Ultrason. 2014;41(4):463-71.
31. Savitha C, Jnanashree Arpitha V, Nagarathnamma R. Significance of cervical length and cervical gland area in cervical maturation. International Journal of Reproduction, Contraception, Obstestrics and Gynecology. 2017;5(8):2634-9.
32. Chappell CA, Rohan LC, Moncla BJ, Wang L, Meyn LA, Bunge K, et al. The effects of reproductive hormones on the physical properties of cervicovaginal fluid. Am J Obstet Gynecol. 2014;211(3):226.e1-7.
33. Ji H, Long V, Briody V, Chien EK. Progesterone modulates integrin {alpha}2 (ITGA2) and {alpha}11 (ITGA11) in the pregnant cervix. Reprod Sci. 2011;18(2):156-63.
34. Oždian T, Vodička J, Dostál J, Holub D, Václavková J, Ješeta M, et al. Proteome Mapping of Cervical Mucus and Its Potential as a Source of Biomarkers in Female Tract Disorders. Int J Mol Sci. 2023;24(2).
35. Genc MR, Witkin SS, Delaney ML, Paraskevas LR, Tuomala RE, Norwitz ER, et al. A disproportionate increase in IL-1beta over IL-1ra in the cervicovaginal secretions of pregnant women with altered vaginal microflora correlates with preterm birth. Am J Obstet Gynecol. 2004;190(5):1191-7.
36. Kirby MA, Heuerman AC, Custer M, Dobyns AE, Strilaeff R, Stutz KN, et al. Progesterone Receptor-Mediated Actions Regulate Remodeling of the Cervix in Preparation for Preterm Parturition. Reprod Sci. 2016;23(11):1473-83.
37. Wånggren K, Dahlgren Granbom M, Iliadis SI, Gudmundsson J, Stavreus-Evers A. Progesterone supplementation in natural cycles improves live birth rates after embryo transfer of frozen-thawed embryos-a randomized controlled trial. Hum Reprod. 2022;37(10):2366-74.
38. Kyrgiou M, Mitra A, Arbyn M, Stasinou SM, Martin-Hirsch P, Bennett P, et al. Fertility and early pregnancy outcomes after treatment for cervical intraepithelial neoplasia: systematic review and meta-analysis. Bmj. 2014;349:g6192.
39. Panelli DM, Wood RL, Elias KM, Growdon WB, Kaimal AJ, Feldman S, et al. The Loop Electrosurgical Excision Procedure and Cone Conundrum: The Role of Cumulative Excised Depth in Predicting Preterm Birth. AJP Rep. 2022;12(1):e41-e8.
40. Kir G, Karabulut M, Yilmaz M, Topal C, Gocmen A. Cytohistological correlation of endocervical gland involvement with high-grade squamous intraepithelial lesions. J Cytol. 2012;29(2):121-4.
41. Blackwell SC, Gyamfi-Bannerman C, Biggio JR, Jr., Chauhan SP, Hughes BL, Louis JM, et al. 17-OHPC to Prevent Recurrent Preterm Birth in Singleton Gestations (PROLONG Study): A Multicenter, International, Randomized Double-Blind Trial. Am J Perinatol. 2020;37(2):127-36.
42. Gyamfi-Bannerman C, Ananth CV. Trends in spontaneous and indicated preterm delivery among singleton gestations in the United States, 2005-2012. Obstet Gynecol. 2014;124(6):1069-74.
43. Fukami T, Ishihara K, Sekiya T, Araki T. Is transvaginal ultrasonography at mid-trimester useful for predicting early spontaneous preterm birth? J Nippon Med Sch. 2003;70(2):135-40.
44. Manuck TA, Esplin MS, Biggio J, Bukowski R, Parry S, Zhang H, et al. The phenotype of spontaneous preterm birth: application of a clinical phenotyping tool. Am J Obstet Gynecol. 2015;212(4):487.e1-.e11.