DOI:
10.1055/s-00000142
Frauenheilkunde up2date
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References
Iams JD, Goldenberg RL, Meis PJ. et al.
The length of the cervix and the risk of spontaneous premature delivery. National Institute of Child Health and Human Development Maternal Fetal Medicine Unit Network.
N Engl J Med 1996; 334: 567-572
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