@misc{indiciae96fde10e7f0f,
  title = {Prophylaxis against postoperative pulmonary embolism.},
  author = {J Black and C J Strachan},
  year = {1978},
  doi = {10.1016/s0140-6736(78)92260-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/79903/},
  note = {Source identifier: 79903}
}