@misc{indiciae5833b542c0a7,
  title = {Letter: Comparative tuberculin reactions.},
  author = {T H Rea and R Seltzer and N E Levan},
  year = {1974},
  doi = {10.1001/jama.229.9.1165b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4407920/},
  note = {Source identifier: 4407920}
}