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Risk Factors for Preterm Birth in an International Prospective Cohort of Nulliparous Women
- Gustaaf Albert Dekker,
- Shalem Y. Lee,
- Robyn A. North,
- Lesley M. McCowan,
- Nigel A. B. Simpson,
- Claire T. Roberts
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- Published: July 16, 2012
- https://doi.org/10.1371/journal.pone.0039154