@misc{indiciaee25c75f93d87,
  title = {Ageing changes in human heart valves.},
  author = {A Pomerance},
  year = {1967},
  doi = {10.1136/hrt.29.2.222},
  url = {https://pubmed.ncbi.nlm.nih.gov/6020817/},
  note = {Source identifier: 6020817}
}