@misc{indiciae0bc7f9bc3195,
  title = {Endogenous opioids, catecholamines and vasovagal syncope.},
  author = {H E Kulbertus},
  year = {1996},
  doi = {10.1093/oxfordjournals.eurheartj.a014740},
  url = {https://pubmed.ncbi.nlm.nih.gov/8922905/},
  note = {Source identifier: 8922905}
}