@misc{indiciaefae1175ddb1a,
  title = {Smoking obscured.},
  author = {C H Kitchin},
  year = {1965},
  doi = {10.1016/s0140-6736(65)92310-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4165423/},
  note = {Source identifier: 4165423}
}