@misc{indiciae40eeac0e8a94,
  title = {A better system for polio vaccination in developing countries.},
  author = {P E Fine},
  year = {1980},
  doi = {10.1136/bmj.281.6244.873},
  url = {https://pubmed.ncbi.nlm.nih.gov/7427492/},
  note = {Source identifier: 7427492}
}