PT - JOURNAL ARTICLE ED - , TI - Answer DP - 2006 Oct 01 TA - Gut PG - 1528--1528 VI - 55 IP - 10 4099 - http://gut.bmj.com/content/55/10/1528.short 4100 - http://gut.bmj.com/content/55/10/1528.full SO - Gut2006 Oct 01; 55