@misc{indiciae8a5bde307f7c,
  title = {Contrast echocardiography.},
  author = {Michael J Stewart},
  year = {2003},
  doi = {10.1136/heart.89.3.342},
  url = {https://pubmed.ncbi.nlm.nih.gov/12591856/},
  note = {Source identifier: 12591856}
}