RT Journal Article SR Electronic T1 Randomised controlled trials in general practice: time for international collaboration JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 6 OP 8 DO 10.1136/ip.4.1.6 VO 4 IS 1 A1 Underwood, Martin R A1 Carter, Yvonne H YR 1998 UL http://injuryprevention.bmj.com/content/4/1/6.abstract AB