PT - JOURNAL ARTICLE ED - , TI - Erratum AID - 10.1136/gut.40.6.797 DP - 1997 Jun 01 TA - Gut PG - 797--797 VI - 40 IP - 6 4099 - http://gut.bmj.com/content/40/6/797.short 4100 - http://gut.bmj.com/content/40/6/797.full SO - Gut1997 Jun 01; 40