@misc{indiciae73fd72e34efd,
  title = {Self-titration by cigarette smokers.},
  author = {H Ashton and R Stepney and J W Thompson},
  year = {1979},
  doi = {10.1136/bmj.2.6186.357},
  url = {https://pubmed.ncbi.nlm.nih.gov/486932/},
  note = {Source identifier: 486932}
}