PT - JOURNAL ARTICLE AU - William Haddon, Jr TI - The changing approach to the epidemiology, prevention, and amelioration of trauma: the transition to approaches etiologically rather than descriptively based AID - 10.1136/ip.5.3.231 DP - 1999 Sep 01 TA - Injury Prevention PG - 231--235 VI - 5 IP - 3 4099 - http://injuryprevention.bmj.com/content/5/3/231.short 4100 - http://injuryprevention.bmj.com/content/5/3/231.full SO - Inj Prev1999 Sep 01; 5