@misc{indiciaea1599b67ab1f,
  title = {Immunizations for foreign travel.},
  author = {G F Hayden and J J Witte},
  year = {1978},
  doi = {10.1097/00007611-197802000-00030},
  url = {https://pubmed.ncbi.nlm.nih.gov/622632/},
  note = {Source identifier: 622632}
}