@misc{indiciaec70eaf5e3e49,
  title = {Prolonged prothrombin time with warfarin.},
  author = {J Black},
  year = {1990},
  doi = {10.1177/014107689008300732},
  url = {https://pubmed.ncbi.nlm.nih.gov/2395157/},
  note = {Source identifier: 2395157}
}