@misc{indiciaebca361a3c18f,
  title = {Functional heart murmurs.},
  author = {G G JOHN},
  year = {1958},
  doi = {10.1080/00325481.1958.11691997},
  url = {https://pubmed.ncbi.nlm.nih.gov/13518003/},
  note = {Source identifier: 13518003}
}