PT - JOURNAL ARTICLE ED - , TI - Answer DP - 2005 Aug 01 TA - Gut PG - 1193--1193 VI - 54 IP - 8 4099 - http://gut.bmj.com/content/54/8/1193.short 4100 - http://gut.bmj.com/content/54/8/1193.full SO - Gut2005 Aug 01; 54