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doi.org/10.1038/sj.ejcn.1601654, hdl.handle.net/1765/61516
European Journal of Clinical Nutrition
Department of Gynaecology & Obstetrics

de Weerd, S., Steegers-Theunissen, R., de Boo, T., Thomas, C., & Steegers, E. (2003). Maternal periconceptional biochemical and hematological parameters, vitamin profiles and pregnancy outcome. European Journal of Clinical Nutrition, 57(9), 1128–1134. doi:10.1038/sj.ejcn.1601654