DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Spellacy WN, Gravem H, Fisch RO.
The umbilical cord complications of true knots, nuchal coils, and cords around the body. Report from the collaborative study of cerebral palsy.
Am J Obstet Gynecol 1966;
94: 1136-1142
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