@misc{indiciae61dc4568d622,
  title = {Echocardiography.},
  author = {R D Gupta and K L Kershbaum and S K Mandal and P F Binnion},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1218866/},
  note = {Source identifier: 1218866}
}