@misc{indiciae7c5ca17fb3db,
  title = {Contrast echocardiography. Introduction.},
  author = {M A García-Fernández},
  year = {2004},
  doi = {10.1016/s1525-2167(04)80001-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/15698554/},
  note = {Source identifier: 15698554}
}