@misc{indiciae1bedf8269a5d,
  title = {Acoustic stethoscopes.},
  author = {Roy D Wallen},
  doi = {10.2345/i0899-8205-40-5-367.1},
  url = {https://pubmed.ncbi.nlm.nih.gov/17078366/},
  note = {Source identifier: 17078366}
}