@misc{indiciae075eb4bc5b56,
  title = {Typhoid vaccines.},
  author = {M M Levine and C Ferreccio},
  year = {1988},
  doi = {10.1016/s0140-6736(88)92736-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2892999/},
  note = {Source identifier: 2892999}
}