TY  - RPRT
TI  - Understanding opioids and addiction.
AU  - M McCaffery
AU  - B R Ferrell
PY  - 1994
DO  - 10.1097/00152193-199408000-00027
UR  - https://pubmed.ncbi.nlm.nih.gov/7916145/
ID  - 7916145
ER  -