RT Journal Article SR Electronic T1 The changing approach to the epidemiology, prevention, and amelioration of trauma: the transition to approaches etiologically rather than descriptively based JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 231 OP 235 DO 10.1136/ip.5.3.231 VO 5 IS 3 A1 William Haddon, Jr YR 1999 UL http://injuryprevention.bmj.com/content/5/3/231.abstract AB