@misc{indiciaea7973142e556,
  title = {Evaluation of solid-phase extraction method for codeine and morphine in urine using Cerex Polycrom Clin II columns and the Speedisk 48 pressure processor at a high-throughput forensic drug-testing laboratory.},
  author = {Melissa M Churley and Timothy P Lyons and Paul V Robandt and Mark R Bruins},
  year = {2003},
  doi = {10.1093/jat/27.7.530},
  url = {https://pubmed.ncbi.nlm.nih.gov/14621676/},
  note = {Source identifier: 14621676}
}