@misc{indiciae8edbe3554f5e,
  title = {Mitral stenosis and COPD.},
  author = {F Robicsek},
  year = {1980},
  doi = {10.1378/chest.78.1.117b},
  url = {https://pubmed.ncbi.nlm.nih.gov/7471834/},
  note = {Source identifier: 7471834}
}