@misc{indiciaea0ab68328725,
  title = {My three valves.},
  author = {J T Harrington},
  year = {1993},
  doi = {10.1056/nejm199305063281811},
  url = {https://pubmed.ncbi.nlm.nih.gov/8469256/},
  note = {Source identifier: 8469256}
}