Optimal range of hemoglobin concentration in pregnancy.

@article{Betlehem2006OptimalRO,
  title={Optimal range of hemoglobin concentration in pregnancy.},
  author={J{\'o}zsef Betlehem and Mikl{\'o}s Kopp{\'a}n and J{\'o}zsef B{\'o}dis},
  journal={American journal of obstetrics and gynecology},
  year={2006},
  volume={195 5},
  pages={1499-500; author reply 1500}
}