DOI: 10.1055/s-00028422

Ultrasound International Open

References

van Baaren GJ, Vis JY, Wilms FF, Oudijk MA, Kwee A, Porath MM et al.
Predictive value of cervical length measurement and fibronectin testing in threatened preterm labor.

Obstet Gynecol 2014;
123: 1185-1192

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