@misc{indiciaef8e33fd577fe,
  title = {The heparin-thrombin clotting-time.},
  author = {J R O'Brien},
  year = {1976},
  doi = {10.1016/s0140-6736(76)92395-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/73841/},
  note = {Source identifier: 73841}
}