@misc{indiciaeaacf6274d40b,
  title = {[Strong opioids and constipation].},
  author = {A Schwarzer and F Nauck and E Klaschik},
  year = {2005},
  doi = {10.1007/s00482-004-0325-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/15004747/},
  note = {Source identifier: 15004747}
}