@misc{indiciae217a5c90d2f6,
  title = {Cover charge.},
  author = {C La Vecchia},
  year = {1988},
  doi = {10.1016/s0140-6736(88)92336-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/2899703/},
  note = {Source identifier: 2899703}
}