@misc{indiciae8516d39ad61b,
  title = {Viruses and chronic bronchitis.},
  author = {N R Grist},
  year = {1967},
  doi = {10.1177/003693306701201105},
  url = {https://pubmed.ncbi.nlm.nih.gov/4293860/},
  note = {Source identifier: 4293860}
}