Assessing the consequences of changing childbirth. Smart cards are expensive and easily damaged.

@article{Fawdry1995AssessingTC,
  title={Assessing the consequences of changing childbirth. Smart cards are expensive and easily damaged.},
  author={R D S Fawdry},
  journal={BMJ},
  year={1995},
  volume={310 6986},
  pages={1066-7}
}