@misc{indiciae45289cebe7c9,
  title = {Left ventricular function in patients with chronic obstructive pulmonary disease.},
  author = {J F Williams and R H Childress and D L Boyd and L M Higgs and R H Behnke},
  year = {1968},
  doi = {10.1172/jci105803},
  url = {https://pubmed.ncbi.nlm.nih.gov/5645859/},
  note = {Source identifier: 5645859}
}