@misc{indiciae124ae7bebcbe,
  title = {Venography.},
  author = {W J Williams},
  year = {1973},
  doi = {10.1161/01.cir.47.2.220},
  url = {https://pubmed.ncbi.nlm.nih.gov/4684923/},
  note = {Source identifier: 4684923}
}