DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Sepulveda W, Shennan AH, Bower S. et al.
True knot of the umbilical cord: a difficult prenatal ultrasonographic diagnosis.
Ultrasound Obstet Gynecol 1995;
5: 106-108
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