@misc{indiciaed5b4ab92b64e,
  title = {Human spinal fluid methadone levels.},
  author = {R B Rubenstein and M J Kreek and N Mbawa and W I Wolff and R Korn and C L Gutjahr},
  year = {1978},
  doi = {10.1016/0376-8716(78)90022-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/631010/},
  note = {Source identifier: 631010}
}