@misc{indiciae8ee7fef8df3a,
  title = {Intrathoracic tracheal collapse--a pathophysiological study.},
  author = {O Hjalmarson},
  year = {1973},
  doi = {10.1136/adc.48.2.162-f},
  url = {https://pubmed.ncbi.nlm.nih.gov/4690521/},
  note = {Source identifier: 4690521}
}