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1 Intrapartum ultrasound: A useful method for evaluating labor progress and predicting operative vaginal delivery
Ki Hoon Ahn, Min-Jeong Oh
Obstet Gynecol Sci.2014;57(6):427-435.   Published online 2014 November 20     DOI: http://dx.doi.org/10.5468/ogs.2014.57.6.427
      

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