@misc{indiciaed5955f8e58a8,
  title = {Extradural buprenorphine.},
  author = {M Zenz and S Piepenbrock},
  year = {1982},
  doi = {10.1093/bja/54.10.1146-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/7126409/},
  note = {Source identifier: 7126409}
}