@misc{indiciaec129286a79a7,
  title = {Differential defence rates.},
  author = {P G Ford},
  year = {1989},
  doi = {10.1136/bmj.298.6669.323-e},
  url = {https://pubmed.ncbi.nlm.nih.gov/2493921/},
  note = {Source identifier: 2493921}
}