8. Liu, B. et al. (2020). Maternal cigarette smoking before and during pregnancy and the risk of preterm birth: a dose-response analysis of 25 million mother-infant pairs.
9. Anderson, T. M. et al. (2019). Maternal smoking before and during pregnancy and the risk of sudden unexpected infant death.
10. Leite, M. et al. (2014). Maternal smoking in pregnancy and risk for congenital malformations: results of a Danish register-based cohort study.
11. Raisanen, S. et al. (2014). Smoking cessation in the first trimester reduces most obstetric risks, but not the risks of major congenital anomalies and admission to neonatal care: a population-based cohort study of 1 164 953 singleton pregnancies in Finland.
12. Adam, M. P. (2012). The all-or-none phenomenon revisited.
13. Gilbert-Barness, E. (2010). Review: teratogenic causes of malformations
14. Legault, L. M. et al. (2021). Pre-implantation alcohol exposure induces lasting sex-specific DNA methylation programming errors in the developing forebrain.
15. Nykjaer, C. et al. (2014). Maternal alcohol intake prior to and during pregnancy and risk of adverse birth outcomes: evidence from a British cohort. Journal of epidemiology and community health, 68 (6), 542–549.
16. Zhou, Q. et al. (2020). Association between preconception paternal smoking and birth defects in offspring: evidence from the database of the National Free Preconception Health Examination Project in China.
17. Wilhoit, L. F. et al. (2017). Fetal alcohol spectrum disorders: characteristics, complications, and treatment.
18. Feldman, H. S. et al. (2012). Prenatal alcohol exposure patterns and alcohol-related birth defects and growth deficiencies: a prospective study.
19. Lange, S. et al. (2017). Global prevalence of fetal alcohol spectrum disorder among children and youth.
20. Popova, S. et al. (2017). Estimation of national, regional, and global prevalence of alcohol use during pregnancy and fetal alcohol syndrome: a systematic review and meta-analysis.
21. Abel, E. L. (2006). Fetal alcohol syndrome: a cautionary note.
22. O’Brien, P. (2007). Is it all right for women to drink small amounts of alcohol in pregnancy? Yes.
23. Nathanson, V. et al. (2007). Is it all right for women to drink small amounts of alcohol in pregnancy? No.
24. Armstrong, E. M. (2017). Making sense of advice about drinking during pregnancy: does evidence even matter?
25. Mamluk, L. et al. (2017). Low alcohol consumption and pregnancy and childhood outcomes: time to change guidelines indicating apparently ‘safe’ levels of alcohol during pregnancy? A systematic review and meta-analysis.
26. Van Gool, J. D. et al. (2018). Folic acid and primary prevention of neural tube defects: a review.
27. Lee, S. & Gleeson, J. G. (2020). Closing in on mechanisms of open neural tube defects.
28. Blencowe, H. et al. (2018). Estimates of global and regional prevalence of neural tube defects for 2015: a systematic analysis.
29. Khan, K. M. & Jialal, I. Folic Acid Deficiency. [Updated 2022 Jun 27]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing.
30. Koury, M. J. & Ponka, P. (2004). New insights into erythropoiesis: the roles of folate, vitamin B12, and Iron.