Current difficulties in use of maternal serum alpha-fetoprotein levels in counseling mid-trimester older pregnant women regarding risk of a Down syndrome fetus.

@article{Hook1988CurrentDI,
  title={Current difficulties in use of maternal serum alpha-fetoprotein levels in counseling mid-trimester older pregnant women regarding risk of a Down syndrome fetus.},
  author={Ernest B. Hook},
  journal={American journal of medical genetics},
  year={1988},
  volume={31 1},
  pages={247-50}
}