@misc{indiciae54c760a272dc,
  title = {Smallpox.},
  author = {A B Christie},
  year = {1973},
  doi = {10.1136/bmj.2.5865.539},
  url = {https://pubmed.ncbi.nlm.nih.gov/4714473/},
  note = {Source identifier: 4714473}
}