@misc{indiciae71c0d990ed01,
  title = {Endogenous opiates: 1984.},
  author = {G A Olson and R D Olson and A J Kastin},
  doi = {10.1016/0196-9781(85)90181-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/3906596/},
  note = {Source identifier: 3906596}
}