@misc{indiciae198b71c36197,
  title = {Vaccination against smallpox.},
  author = {D T Jones},
  year = {1980},
  doi = {10.1136/bmj.281.6246.1004},
  url = {https://pubmed.ncbi.nlm.nih.gov/7427527/},
  note = {Source identifier: 7427527}
}