@misc{indiciae967b99b6e8ce,
  title = {Endogenous opiates: 1995.},
  author = {G A Olson and R D Olson and A J Kastin},
  year = {1996},
  doi = {10.1016/s0196-9781(96)00225-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/8971940/},
  note = {Source identifier: 8971940}
}