@misc{indiciae912165cb82a9,
  title = {Valsalva maneuver.},
  author = {Bradley C Hiner},
  year = {2005},
  doi = {10.3121/cmr.3.2.55},
  url = {https://pubmed.ncbi.nlm.nih.gov/16012118/},
  note = {Source identifier: 16012118}
}