@misc{indiciae4719cbce80b4,
  title = {Vaccination in Third World countries.},
  author = {G Ada},
  year = {1993},
  doi = {10.1016/0952-7915(93)90121-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/8240729/},
  note = {Source identifier: 8240729}
}