Rapid determination of urinary pregnanediol; a comparison of two methods.

@article{Swyer1949RapidDO,
  title={Rapid determination of urinary pregnanediol; a comparison of two methods.},
  author={G. I. M. Swyer},
  journal={Lancet},
  year={1949},
  volume={1 6542},
  pages={104}
}