Folic acid supplements and risk of facial clefts: national population based case-control study

@article{Wilcox2007FolicAS,
  title={Folic acid supplements and risk of facial clefts: national population based case-control study},
  author={Allen J Wilcox and Rolv Terje Lie and Kari Solvoll and Jack Taylor and D. Robert McConnaughey and Frank Ellof Abyholm and Hallvard Vindenes and Stein Emil Vollset and Christian A. Drevon},
  journal={BDJ},
  year={2007},
  volume={202},
  pages={547-547}
}
The risk of cleft lip appears to be reduced by folic acid supplements (FAS), but not the risk of cleft palate.