DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Heath VC, Southall TR, Souka AP, Elisseou A, Nicolaides KH.
Cervical length at 23 weeks of gestation: prediction of spontaneous preterm delivery.

Ultrasound Obstet Gynecol 1998;
12 (05) 312-317

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