@misc{indiciae21d85bc7956a,
  title = {Cigarette dependence.},
  author = {M J Turnbull and A S Kelvin},
  year = {1971},
  doi = {10.1136/bmj.3.5766.115-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/5090815/},
  note = {Source identifier: 5090815}
}