@misc{indiciaee30d3a8d1e78,
  title = {Bronchial hyperreactivity in chronic bronchitis.},
  author = {T W Astin},
  year = {1977},
  doi = {10.1016/s0140-6736(77)92803-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/67359/},
  note = {Source identifier: 67359}
}