@misc{indiciaef555accc612a,
  title = {Manipulating cardiac murmurs.},
  author = {J Stapleton},
  year = {1982},
  doi = {10.1378/chest.81.2.135},
  url = {https://pubmed.ncbi.nlm.nih.gov/7056072/},
  note = {Source identifier: 7056072}
}