DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Iams JD, Johnson FF, Sonek J, Sachs L, Gebauer C, Samuels P.
Cervical competence as a continuum: a study of ultrasonographic cervical length and obstetric performance.

Am J Obstet Gynecol 1995;
172 (4 Pt 1): 1097-1103 (PMID: , discussion 1104–1106)

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