@misc{indiciae314c4016c15b,
  title = {Mitral supravalvular ring: a case report.},
  author = {Walter Serra and Paola Testa and Diego Ardissino},
  year = {2005},
  doi = {10.1186/1476-7120-3-19},
  url = {https://pubmed.ncbi.nlm.nih.gov/16095540/},
  note = {Source identifier: 16095540}
}