@misc{indiciae740600e8973e,
  title = {Are active and passive smoking harmful? Determining causation.},
  author = {G H Guyatt and M T Newhouse},
  year = {1985},
  doi = {10.1378/chest.88.3.445},
  url = {https://pubmed.ncbi.nlm.nih.gov/4028856/},
  note = {Source identifier: 4028856}
}