Article Text
Causation
Pregnancy within 8 months of a previous birth was associated with an increased rate of preterm birth
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Footnotes
Source of funding: Danish National Research Council.
For correspondence: Dr O Basso, The Danish Epidemiology Science Centre at the Department of Epidemiology and Social Medicine, Aarhus University, Høegh-Guldberg Gade 10, DK 8000, Aarhus C, Denmark. Fax +45 8613 1580.