@misc{indiciae87cc217e9de7,
  title = {Heroin maintenance.},
  author = {H Berger},
  year = {1977},
  doi = {10.1111/j.1360-0443.1977.tb00690.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/270371/},
  note = {Source identifier: 270371}
}