• 1
    Iams JD, Goldenberg RL, Meis PJ, Mercer BM, Moawad A, Das A, Thom E, McNellis D, Copper RL, Johnson F, Roberts JM. The length of the cervix and the risk of spontaneous preterm delivery. N Engl J Med 1996; 334: 567572.
  • 2
    ACOG Practice Bulletin. Cervical Insufficiency. Obstet Gynecol 2003; 102: 10911099.
  • 3
    Yost NP, Bloom SL, Twickler DM, Leveno KJ. Pitfalls in ultrasound cervical length measurements for predicting preterm birth. Obstet Gynecol 1999; 93: 510516.
  • 4
    MacNaughton MC, Chalmers JG, Dubowitz V, Dunn PM, Grant AM, McPherson K, Pearson JF, Peto R, Turnbull AC. Final report of the Medical Research Council/Royal College of Obstetricians and Gynaecologists multicentre randomized trial of cervical cerclage. Br J Obstet Gynaecol 1993; 100: 516523.
  • 5
    Althuisius SM, Dekker GA, Hummel P, Bekedam DJ, van Geijn HP. Final results of the cervical incompetence prevention randomized cerclage trial (CIPRACT): Therapeutic cerclage with bed rest versus bed rest alone. Am J Obstet Gynecol 2001; 185: 11061112.
  • 6
    Rust OA, Atlas RO, Reed J, van Gaalen J, Balducci J. Revisiting the short cervix detected by transvaginal ultrasound in the second trimester: why cerclage therapy may not help. Am J Obstet Gynecol 2001; 185: 10981105.
  • 7
    To MS, Alfirevic Z, Heath VC, Cicero S, Cacho AM, Williamson PR, Nicolaides KH. Cervical cerclage for prevention of preterm delivery in women with short cervix; randomised controlled trial. Lancet 2004; 363: 18491853.
  • 8
    Berghella V, Odibo AO, Tolosa JE. Cerclage for prevention of preterm birth in women with a short cervix found on transvaginal ultrasound examination: a randomized trial. Am J Obstet Gynecol 2004; 191: 13111317.
  • 9
    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: 181189.