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1 Prediction of Prolonged Pregnancy in Nulliparous Women by Transvaginal Ultrasonographic Measurement of Cervical Length at 20-24 Weeks and 37 Weeks
Young Hoon Suh, Kyo Hoon Park, Joon-Seok Hong, Jae Hong Noh
J Korean Med Sci.2007;22(1):89-93.   Published online 2007 February 28     DOI: http://dx.doi.org/10.3346/jkms.2007.22.1.89
      

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