PT - JOURNAL ARTICLE ED - , TI - News AID - 10.1136/gut.28.1.113-a DP - 1987 Jan 01 TA - Gut PG - 113--113 VI - 28 IP - 1 4099 - http://gut.bmj.com/content/28/1/113.2.short 4100 - http://gut.bmj.com/content/28/1/113.2.full SO - Gut1987 Jan 01; 28