@misc{indiciaed36ba8fc64b7,
  title = {Endogenous opioids.},
  author = {J M Rees},
  year = {1987},
  doi = {10.1016/s0950-3579(87)80028-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/3334216/},
  note = {Source identifier: 3334216}
}