PT - JOURNAL ARTICLE ED - , TI - ANSWERS AID - 10.1136/gut.2008.172650a DP - 2009 Aug 01 TA - Gut PG - 1048--1048 VI - 58 IP - 8 4099 - http://gut.bmj.com/content/58/8/1048.short 4100 - http://gut.bmj.com/content/58/8/1048.full SO - Gut2009 Aug 01; 58