@misc{indiciae39d80c691b8a,
  title = {Mitral valve closure in atrial flutter.},
  author = {M A Greenberg and L S Herman and M V Cohen},
  year = {1979},
  doi = {10.1161/01.cir.59.5.902},
  url = {https://pubmed.ncbi.nlm.nih.gov/428103/},
  note = {Source identifier: 428103}
}