@misc{indiciae71ea81448160,
  title = {Smallpox vaccination.},
  author = {H D Riley},
  year = {1969},
  doi = {10.1097/00007611-196911000-00029},
  url = {https://pubmed.ncbi.nlm.nih.gov/5366441/},
  note = {Source identifier: 5366441}
}