@misc{indiciae1b60623e21f2,
  title = {Tracheal collapse.},
  author = {R Roka and B Niederle and R Kokoschka},
  year = {1980},
  doi = {10.1002/bjs.1800670318},
  url = {https://pubmed.ncbi.nlm.nih.gov/6988036/},
  note = {Source identifier: 6988036}
}