The role of the case-control study in evaluating health interventions. Vitamin supplementation and neural tube defects.

@article{Rhoads1984TheRO,
  title={The role of the case-control study in evaluating health interventions. Vitamin supplementation and neural tube defects.},
  author={George G. Rhoads and James L. Mills},
  journal={American journal of epidemiology},
  year={1984},
  volume={120 6},
  pages={803-8}
}