@misc{indiciae86f007c398e9,
  title = {Tuberculin testing.},
  author = {H G Calwell},
  year = {1979},
  doi = {10.1136/bmj.1.6159.345},
  url = {https://pubmed.ncbi.nlm.nih.gov/421115/},
  note = {Source identifier: 421115}
}