@misc{indiciae8bb5bd64c976,
  title = {Endogenous opiates: 1980.},
  author = {G A Olson and R D Olson and A J Kastin and D H Coy},
  year = {1981},
  doi = {10.1016/s0196-9781(81)80128-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/6117843/},
  note = {Source identifier: 6117843}
}