@misc{indiciae685319d52ad5,
  title = {Safe per-operative anticoagulation.},
  author = {J Wieberdink},
  year = {1967},
  doi = {10.1136/thx.22.6.567},
  url = {https://pubmed.ncbi.nlm.nih.gov/6076513/},
  note = {Source identifier: 6076513}
}