RT Journal Article SR Electronic T1 Review: vaccines prevent influenza and influenza-like illness in healthy children >2 years of age JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 140 OP 140 DO 10.1136/ebm.11.5.140 VO 11 IS 5 YR 2006 UL http://ebm.bmj.com/content/11/5/140.abstract AB