@misc{indiciae1fadd29a0821,
  title = {A diphtheria outbreak in Chicago.},
  author = {C A Kallick and G F Brooks and A S Dover and M C Brown and O Brolnitsky},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/4392772/},
  note = {Source identifier: 4392772}
}