@misc{indiciae901c3ff461cb,
  title = {Air pollution and bronchitis.},
  author = {C DALY},
  year = {1954},
  doi = {10.1136/bmj.2.4889.687},
  url = {https://pubmed.ncbi.nlm.nih.gov/13190233/},
  note = {Source identifier: 13190233}
}