@misc{indiciaebc43e34c205e,
  title = {Prothrombin times: when are they not the same?},
  author = {W T Sawyer},
  year = {1991},
  doi = {10.1016/s0160-3450(15)31286-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/1763777/},
  note = {Source identifier: 1763777}
}