@misc{indiciae5a73995dfa61,
  title = {Oral controlled-release morphine and gut function: a study in volunteers.},
  author = {P A Clyburn and M Rosen},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2676529/},
  note = {Source identifier: 2676529}
}