DOI:
10.1055/s-00000009
American Journal of Perinatology
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References
McElrath TF, Hecht JL, Dammann O. , et al; ELGAN Study Investigators.
Pregnancy disorders that lead to delivery before the 28th week of gestation: an epidemiologic approach to classification.
Am J Epidemiol 2008;
168 (09) 980-989
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