@misc{indiciae39900bada421,
  title = {Letter: Older smokers.},
  author = {F E Whitehead},
  year = {1976},
  doi = {10.1136/bmj.1.6023.1469-e},
  url = {https://pubmed.ncbi.nlm.nih.gov/953548/},
  note = {Source identifier: 953548}
}