DOI:
10.1055/s-00000009
American Journal of Perinatology
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References
Fonseca EB, Celik E, Parra M, Singh M, Nicolaides KH. Fetal Medicine Foundation Second Trimester Screening Group.
Progesterone and the risk of preterm birth among women with a short cervix
N Engl J Med 2007; 357: 462-469
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