@misc{indiciaec9c23a61f6f2,
  title = {Immunization against typhoid fever.},
  author = {V Balraj and G Sridharan and M V Jesudason and V Balaraj},
  url = {https://pubmed.ncbi.nlm.nih.gov/1306669/},
  note = {Source identifier: 1306669}
}