@misc{indiciae470de053dd13,
  title = {Endogenous opiates: 1986.},
  author = {G A Olson and R D Olson and A J Kastin},
  doi = {10.1016/0196-9781(87)90147-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/3327057/},
  note = {Source identifier: 3327057}
}