Nontraumatic extracranial aneurysm of the vertebral artery.

@article{Kikuchi1983NontraumaticEA,
  title={Nontraumatic extracranial aneurysm of the vertebral artery.},
  author={Kenji Kikuchi and Masayoshi Kowada},
  journal={Surgical neurology},
  year={1983},
  volume={19 5},
  pages={425-7}
}