@misc{indiciaeafc5955904c9,
  title = {Availability of sustained-release morphine.},
  author = {R B Patt and J Thanik},
  year = {1989},
  doi = {10.1016/0885-3924(89)90056-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/2703734/},
  note = {Source identifier: 2703734}
}