@misc{indiciae9966e3172133,
  title = {Smallpox vaccination.},
  author = {M F Dixon},
  year = {1970},
  doi = {10.1136/bmj.2.5708.539},
  url = {https://pubmed.ncbi.nlm.nih.gov/5468134/},
  note = {Source identifier: 5468134}
}