PT - JOURNAL ARTICLE AU - Susan Pinker TI - Precautionary principle leads to "may contain" clause for genetically modified foods DP - 2000 Mar 21 TA - Canadian Medical Association Journal PG - 874--874 VI - 162 IP - 6 4099 - http://www.cmaj.ca/content/162/6/874.short 4100 - http://www.cmaj.ca/content/162/6/874.full SO - CMAJ2000 Mar 21; 162