PT - JOURNAL ARTICLE ED - , TI - ANSWERS AID - 10.1136/gut.2008.172551a DP - 2009 Jul 01 TA - Gut PG - 1024--1024 VI - 58 IP - 7 4099 - http://gut.bmj.com/content/58/7/1024.short 4100 - http://gut.bmj.com/content/58/7/1024.full SO - Gut2009 Jul 01; 58