@misc{indiciaef8b47e196756,
  title = {Tuberculin PPD RT23: still going strong.},
  author = {K Hasløv and S Ponce-de-Leon Rosales and S Rangel-Frausto and S Olesen Larsen},
  year = {1998},
  url = {https://pubmed.ncbi.nlm.nih.gov/9783524/},
  note = {Source identifier: 9783524}
}