@misc{indiciae12bea0d4394e,
  title = {Different behavioral observation methods serve different purposes.},
  author = {Kenneth D Craig and Thomas Hadjistavropoulos},
  year = {2004},
  doi = {10.1016/j.pain.2004.04.040},
  url = {https://pubmed.ncbi.nlm.nih.gov/15288422/},
  note = {Source identifier: 15288422}
}