PT - JOURNAL ARTICLE ED - , TI - EDITOR’S QUIZ: GI SNAPSHOT DP - 2005 May 01 TA - Gut PG - 697--697 VI - 54 IP - 5 4099 - http://gut.bmj.com/content/54/5/697.short 4100 - http://gut.bmj.com/content/54/5/697.full SO - Gut2005 May 01; 54