DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Conde-Agudelo A, Romero R, Hassan SS. et al.
Transvaginal sonographic cervical length for the prediction of spontaneous preterm birth in twin pregnancies: a systematic review and metaanalysis.
Am J Obstet Gynecol 2010;
203: 128e121–112
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