@misc{indiciaeb8b4082842be,
  title = {Willisian collateralization.},
  author = {David S Liebeskind and Lauren H Sansing},
  year = {2004},
  doi = {10.1212/01.wnl.0000134624.45563.52},
  url = {https://pubmed.ncbi.nlm.nih.gov/15277632/},
  note = {Source identifier: 15277632}
}