@misc{indiciaedd686456079d,
  title = {A machinery murmur.},
  author = {C J Johnson},
  year = {1999},
  doi = {10.1046/j.1365-2044.1999.907tt.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/10995187/},
  note = {Source identifier: 10995187}
}