@misc{indiciae79a8c9179ab4,
  title = {Smallpox vaccination.},
  author = {J N Ormrod},
  year = {1979},
  doi = {10.1136/bmj.2.6197.1072-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/519288/},
  note = {Source identifier: 519288}
}