@misc{indiciae21e48e170d7e,
  title = {Respiratory function after thoracic operations.},
  author = {K K Hallfeldt and W T Knoefel and O Thetter and E Deubler and L Schweiberer},
  year = {1990},
  doi = {10.1016/0003-4975(90)90231-t},
  url = {https://pubmed.ncbi.nlm.nih.gov/2222073/},
  note = {Source identifier: 2222073}
}