PT - JOURNAL ARTICLE AU - Adams, J AU - Hillman, M TI - The risk compensation theory and bicycle helmets AID - 10.1136/ip.7.2.89 DP - 2001 Jun 01 TA - Injury Prevention PG - 89--91 VI - 7 IP - 2 4099 - http://injuryprevention.bmj.com/content/7/2/89.short 4100 - http://injuryprevention.bmj.com/content/7/2/89.full SO - Inj Prev2001 Jun 01; 7