@misc{indiciae4f13e6378581,
  title = {Letter: Factor VIII.},
  author = {J J Veltkamp},
  year = {1973},
  doi = {10.1016/s0140-6736(73)91082-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4129976/},
  note = {Source identifier: 4129976}
}