DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Hershkovitz R, Silberstein T, Sheiner E. et al.
Risk factors associated with true knots of the umbilical cord.
Eur J Obstet Gynecol Reprod Biol 2001;
98: 36-39
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