@misc{indiciae7e934323872f,
  title = {Chronic bronchitis.},
  author = {J L BURN},
  year = {1960},
  doi = {10.1016/s0033-3506(60)80003-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/13806194/},
  note = {Source identifier: 13806194}
}