@misc{indiciae098dfa1502c8,
  title = {Randomised controlled trials and retrospective controls.},
  author = {R Doll and R Peto},
  year = {1980},
  doi = {10.1136/bmj.280.6206.44},
  url = {https://pubmed.ncbi.nlm.nih.gov/7357264/},
  note = {Source identifier: 7357264}
}