@misc{indiciaee61daff32dbb,
  title = {[Educational programs on ventilation-perfusion ratio].},
  author = {A G Chuchalin and G M Sakharova and O N Makretskaia},
  url = {https://pubmed.ncbi.nlm.nih.gov/7783585/},
  note = {Source identifier: 7783585}
}