@misc{indiciae584c8839feaf,
  title = {Observational versus randomised trial evidence.},
  author = {Debbie A Lawlor and George Davey Smith and K Richard Bruckdorfer and Devi Kundu and Shah Ebrahim},
  doi = {10.1016/s0140-6736(04)16926-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/15337394/},
  note = {Source identifier: 15337394}
}