@misc{indiciae51e7d1950db7,
  title = {Preventing tampering with prescriptions: the Marton method.},
  author = {P R Billings},
  year = {1988},
  doi = {10.7326/0003-4819-108-4-637\_1},
  url = {https://pubmed.ncbi.nlm.nih.gov/3348575/},
  note = {Source identifier: 3348575}
}