@misc{indiciae2bd4a4b4f84b,
  title = {Letter: Risk ratios.},
  author = {D E Gormley},
  year = {1976},
  doi = {10.1016/s0140-6736(76)92258-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/57487/},
  note = {Source identifier: 57487}
}