PT - JOURNAL ARTICLE ED - , TI - Review: cannabinoids and codeine have similar effects on pain relief, but cannabinoids commonly cause psychotropic adverse effects AID - 10.1136/ebm.7.1.24 DP - 2002 Jan 01 TA - Evidence Based Medicine PG - 24--24 VI - 7 IP - 1 4099 - http://ebm.bmj.com/content/7/1/24.short 4100 - http://ebm.bmj.com/content/7/1/24.full SO - Evid Based Med2002 Jan 01; 7