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Educational Inequalities in Perinatal Outcomes: The Mediating Effect of Smoking and Environmental Tobacco Exposure
- Gerrit van den Berg,
- Manon van Eijsden,
- Tanja G. M. Vrijkotte,
- Reinoud J. B. J. Gemke
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- Published: May 10, 2012
- https://doi.org/10.1371/journal.pone.0037002