@misc{indiciae35b6a0410873,
  title = {Post concussion syndrome.},
  author = {Laurie M Ryan and Deborah L Warden},
  year = {2003},
  doi = {10.1080/09540260310001606692},
  url = {https://pubmed.ncbi.nlm.nih.gov/15276952/},
  note = {Source identifier: 15276952}
}