@misc{indiciae5d5a9fd7648c,
  title = {[Endogenous opiates and chronic constipation].},
  author = {E Materia and G Bausano},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6635311/},
  note = {Source identifier: 6635311}
}