@misc{indiciae74b4e9f2ca04,
  title = {Pneumothorax for esophageal bleeding.},
  author = {R L Butler and P Byles and L Port},
  year = {1973},
  doi = {10.7326/0003-4819-78-2-312\_2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4539613/},
  note = {Source identifier: 4539613}
}