@misc{indiciaef2dc43f88b5e,
  title = {Papillary-muscle dysfunction.},
  author = {T O Cheng},
  year = {1970},
  doi = {10.1056/nejm197005282822216},
  url = {https://pubmed.ncbi.nlm.nih.gov/5442640/},
  note = {Source identifier: 5442640}
}