PT - JOURNAL ARTICLE AU - Horby, Peter TI - For some groups traditionally considered to be ‘high risk’, the evidence of an increased risk of severe influenza-associated illness is poor quality AID - 10.1136/eb-2013-101572 DP - 2014 Jun 01 TA - Evidence Based Medicine PG - 110--110 VI - 19 IP - 3 4099 - http://ebm.bmj.com/content/19/3/110.short 4100 - http://ebm.bmj.com/content/19/3/110.full SO - Evid Based Med2014 Jun 01; 19