@misc{indiciaef2552520b16d,
  title = {B.C.G. tuberculin as a testing material.},
  author = {E FRIEDMAN and I SILVERMAN},
  year = {1949},
  doi = {10.1056/nejm194912082412302},
  url = {https://pubmed.ncbi.nlm.nih.gov/15395659/},
  note = {Source identifier: 15395659}
}