@misc{indiciae41b9e63513da,
  title = {The Björk-Shiley mitral valve prosthesis. A comparative study with different prosthesis orientations.},
  author = {V O Björk and K Böök and A Holmgren},
  year = {1974},
  doi = {10.1016/s0003-4975(10)64375-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4425502/},
  note = {Source identifier: 4425502}
}