DOI:
10.1055/s-00000009
American Journal of Perinatology
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References
Joseph KS, Huang L, Liu S , et al; Fetal and Infant Health Study Group of the Canadian Perinatal Surveillance System.
Reconciling the high rates of preterm and postterm birth in the United States.
Obstet Gynecol 2007;
109 (4) 813-822
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