@misc{indiciae15e1c2c6ac03,
  title = {A collaborative calibration study of reference materials for thromboplastins.},
  author = {J Hermans and A M van den Besselaar and E A Loeliger and E A van der Velde},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6648892/},
  note = {Source identifier: 6648892}
}