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2. European Perinatal Health Report: Core indicators of the health and care of pregnant women and babies in Europe in 2015. Accessed July 22, 2021. https://www.europeristat.com/images/EPHR2015_Euro-Peristat.pdf
3. l’Institut National de la Santé et de la Recherche Médicale, Direction de la Recherche, des Études, de L'évaluation et des Statistiques. Enquête nationale périnatale: Rapport 2016. Accessed July 22, 2021. http://www.xn--epop-inserm-ebb.fr/wp-content/uploads/2017/10/ENP2016_rapport_complet.pdf
4. Preterm birth and maternal smoking: Risks related to gestational age and onset of delivery
5. Effects of smoking during pregnancy