@misc{indiciaef97087aefc34,
  title = {Smallpox vaccination.},
  author = {L M Hambraeus},
  year = {1972},
  doi = {10.1136/bmj.2.5816.771},
  url = {https://pubmed.ncbi.nlm.nih.gov/5036897/},
  note = {Source identifier: 5036897}
}