TY  - RPRT
TI  - Improving opioid effectiveness: from ideas to evidence.
AU  - Eija Kalso
PY  - 2005
DO  - 10.1016/j.ejpain.2004.05.007
UR  - https://pubmed.ncbi.nlm.nih.gov/15737801/
ID  - 15737801
ER  -