PT - JOURNAL ARTICLE ED - , TI - The better-than-nothing idea: debating the use of placebo controls DP - 2002 Mar 05 TA - Canadian Medical Association Journal PG - 573--573 VI - 166 IP - 5 4099 - http://www.cmaj.ca/content/166/5/573.short 4100 - http://www.cmaj.ca/content/166/5/573.full SO - CMAJ2002 Mar 05; 166