@misc{indiciaed613ec9b8df6,
  title = {Quit and win smoking cessation contests: how should effectiveness be evaluated?},
  author = {S Chapman and W Smith and G Mowbray and C Hugo and G Egger},
  year = {1993},
  doi = {10.1006/pmed.1993.1035},
  url = {https://pubmed.ncbi.nlm.nih.gov/8327422/},
  note = {Source identifier: 8327422}
}