@misc{indiciae2b71e571f9e2,
  title = {Comparative effects of codeine and morphine in man.},
  author = {D C Kay and C W Gorodetzky and W R Martin},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/5337162/},
  note = {Source identifier: 5337162}
}