@misc{indiciaeb8925304492c,
  title = {Whooping-cough immunization.},
  author = {R Illingworth},
  year = {1980},
  doi = {10.1136/bmj.280.6208.179-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/7357308/},
  note = {Source identifier: 7357308}
}