PT - JOURNAL ARTICLE AU - I B Pless TI - Expanding the precautionary principle AID - 10.1136/ip.9.1.1 DP - 2003 Mar 01 TA - Injury Prevention PG - 1--2 VI - 9 IP - 1 4099 - http://injuryprevention.bmj.com/content/9/1/1.short 4100 - http://injuryprevention.bmj.com/content/9/1/1.full SO - Inj Prev2003 Mar 01; 9