@misc{indiciae3582c7a84b46,
  title = {Factor IX in warfarin treated patients.},
  author = {K H Orstavik and K Laake},
  year = {1978},
  doi = {10.1016/0049-3848(78)90009-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/694840/},
  note = {Source identifier: 694840}
}