@misc{indiciaef433eeb6988e,
  title = {Doppler echocardiography in normal functioning valve prostheses.},
  author = {R Cha and S S Yang and T Salvucci and S DiBlasi},
  year = {1994},
  url = {https://pubmed.ncbi.nlm.nih.gov/7970283/},
  note = {Source identifier: 7970283}
}