@misc{indiciaeb13427e2def7,
  title = {[Studies on the preservation of purified tuberculin (PPDs). I. Decrease in the potency of the PPDs solution].},
  author = {M HOSOI},
  year = {1957},
  url = {https://pubmed.ncbi.nlm.nih.gov/13492375/},
  note = {Source identifier: 13492375}
}