DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Iams JD, Grobman WA, Lozitska A. Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal–Fetal Medicine Units Network. et al.
Adherence to criteria for transvaginal ultrasound imaging and measurement of cervical length.

Am J Obstet Gynecol 2013;
209 (04) 365.e1-365.e5

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