@misc{indiciaea91a2538ed96,
  title = {Letter: Safer cigarettes.},
  author = {E R Trethewie},
  year = {1975},
  doi = {10.1136/bmj.2.5973.749-d},
  url = {https://pubmed.ncbi.nlm.nih.gov/1139214/},
  note = {Source identifier: 1139214}
}