RT Journal Article SR Electronic T1 Sports and recreational injury: the hidden cost of a healthy lifestyle JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 100 OP 102 DO 10.1136/ip.9.2.100 VO 9 IS 2 A1 S W Marshall A1 K M Guskiewicz YR 2003 UL http://injuryprevention.bmj.com/content/9/2/100.abstract AB