@misc{indiciae313883e565c1,
  title = {Human gliomas contain morphine.},
  author = {Peter Olsen and Mads Rasmussen and Wei Zhu and Else Tonnesen and George B Stefano},
  year = {2005},
  url = {https://pubmed.ncbi.nlm.nih.gov/15874895/},
  note = {Source identifier: 15874895}
}