@misc{indiciaeb69ca3cd9ede,
  title = {Mitral valve replacement using the toroidal prosthesis.},
  author = {J R Rees and T E Murphy and J H Bloch and R G Carlson and R L Kaster and C W Lillehei},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5454173/},
  note = {Source identifier: 5454173}
}