@misc{indiciaecd1766c7737a,
  title = {Endorphins and parturition.},
  author = {J M Detrick and J W Pearson and R C Frederickson},
  year = {1985},
  url = {https://pubmed.ncbi.nlm.nih.gov/3157077/},
  note = {Source identifier: 3157077}
}