@misc{indiciae0b7b461b17d7,
  title = {Contingent negative variation: methods and potential interest in headache.},
  author = {J Schoenen and M Timsit-Berthier},
  year = {1993},
  doi = {10.1046/j.1468-2982.1993.1301028.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8448784/},
  note = {Source identifier: 8448784}
}