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APA Citation
Ars, C. L., Nijs, I. M., Marroun, H. E., Muetzel, R., Schmidt, M., Steenweg-de Graaff, J., van der Lugt, A., Jaddoe, V. W., Hofman, A., Steegers, E. A., Verhulst, F. C., Tiemeier, H., & White, T. (n.d.). prenatal folate, homocysteine and vitamin B12 levels and child brain volumes, cognitive development and psychological functioning: the Generation R Study. British journal of nutrition, 122, S1–S9. http://access.bl.uk/ark:/81055/vdc_100093246492.0x000060