@misc{indiciae76a2cb64bb97,
  title = {Improved echocardiographic visualization in emphysematous subjects.},
  author = {J L Cohen and K N Anwar and R Day},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6580453/},
  note = {Source identifier: 6580453}
}