RT Journal Article SR Electronic T1 Special feature JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 69 OP 69 DO 10.1136/ip.3.1.69 VO 3 IS 1 A1 Simon Chapman YR 1997 UL http://injuryprevention.bmj.com/content/3/1/69.1.abstract AB