@misc{indiciaeefc822567361,
  title = {Pertussis--observations on some bacteriologically confirmed local cases.},
  author = {R S Wickremesinghe and W M Weeraratne},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/6309421/},
  note = {Source identifier: 6309421}
}