@misc{indiciae4ccaa0f05e60,
  title = {Endogenous opiates: 1981.},
  author = {G A Olson and R D Olson and A J Kastin and D H Coy},
  doi = {10.1016/0196-9781(82)90075-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/6300805/},
  note = {Source identifier: 6300805}
}