@misc{indiciae2df863744f15,
  title = {Contrast Doppler echocardiography.},
  author = {P Niederle and P Frídl and E Koudelková and P Jebavý and M Haco},
  year = {1985},
  url = {https://pubmed.ncbi.nlm.nih.gov/4028736/},
  note = {Source identifier: 4028736}
}