@misc{indiciae8d72b121a6ea,
  title = {Improving opioid effectiveness: from ideas to evidence.},
  author = {Eija Kalso},
  year = {2005},
  doi = {10.1016/j.ejpain.2004.05.007},
  url = {https://pubmed.ncbi.nlm.nih.gov/15737801/},
  note = {Source identifier: 15737801}
}