@misc{indiciae8e8d02d0ccc1,
  title = {Echocardiography in acute aortic endocarditis.},
  author = {K Svedberg and I Wallentin},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/910641/},
  note = {Source identifier: 910641}
}