@misc{indiciaed6928bddc558,
  title = {Tuberculin conversions: true or false?},
  author = {G W Comstock and S F Woolpert},
  year = {1978},
  doi = {10.1164/arrd.1978.118.2.215},
  url = {https://pubmed.ncbi.nlm.nih.gov/697172/},
  note = {Source identifier: 697172}
}