@misc{indiciae70e6661d3121,
  title = {[Study of the cardiac function using Valsava's maneuver].},
  author = {H Noguera and O Gutierrez and J Saavedra},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5790946/},
  note = {Source identifier: 5790946}
}