@misc{indiciae3827ea3d111a,
  title = {Headache and sferics.},
  author = {D Vaitl and N Propson and R Stark and B Walter and A Schienle},
  year = {2001},
  url = {https://pubmed.ncbi.nlm.nih.gov/11703470/},
  note = {Source identifier: 11703470}
}