PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/ebmed-2015-110236corr1 DP - 2016 Feb 01 TA - Evidence Based Medicine PG - 13--13 VI - 21 IP - 1 4099 - http://ebm.bmj.com/content/21/1/13.short 4100 - http://ebm.bmj.com/content/21/1/13.full SO - Evid Based Med2016 Feb 01; 21