@misc{indiciaea7bf78bbf9a2,
  title = {Smallpox and smallpox vaccination policy.},
  author = {J M Lane and J D Millar and J M Neff},
  year = {1971},
  doi = {10.1146/annurev.me.22.020171.001343},
  url = {https://pubmed.ncbi.nlm.nih.gov/4400439/},
  note = {Source identifier: 4400439}
}