@misc{indiciae2bc8decfc4ca,
  title = {Formation of prothrombin converting activity.},
  author = {H C Hemker and M P Esnouf and P W Hemker and A C Swart and R G Macfarlane},
  year = {1967},
  doi = {10.1038/215248a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/6059505/},
  note = {Source identifier: 6059505}
}