@misc{indiciae6b31c867883c,
  title = {Tuberculin--which test is best?},
  author = {T Zimmermann},
  year = {1997},
  doi = {10.1002/ppul.1950230885},
  url = {https://pubmed.ncbi.nlm.nih.gov/9443253/},
  note = {Source identifier: 9443253}
}