@misc{indiciae14cf9f78f6ac,
  title = {[Chronic bronchitis].},
  author = {W Schmidt},
  year = {1976},
  doi = {10.1002/pauz.19760050501},
  url = {https://pubmed.ncbi.nlm.nih.gov/967919/},
  note = {Source identifier: 967919}
}