@misc{indiciae9448a23ca960,
  title = {Murmur over an abnormal left apical mass.},
  author = {O Yigitbasi and I Nalbantgil},
  year = {1971},
  doi = {10.1378/chest.59.5.561},
  url = {https://pubmed.ncbi.nlm.nih.gov/4952557/},
  note = {Source identifier: 4952557}
}