@misc{indiciae69c86236454d,
  title = {Prothrombin complex preparations: a cautionary note.},
  author = {O D Ratnoff},
  year = {1974},
  doi = {10.7326/0003-4819-81-6-852},
  url = {https://pubmed.ncbi.nlm.nih.gov/4433087/},
  note = {Source identifier: 4433087}
}