DOI: 10.1055/s-00000009

American Journal of Perinatology

References

Ghi T, Youssef A, Maroni E. , et al.
Intrapartum transperineal ultrasound assessment of fetal head progression in active second stage of labor and mode of delivery.

Ultrasound Obstet Gynecol 2013;
41 (04) 430-435

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