DOI:
10.1055/s-00000009
American Journal of Perinatology
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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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