PT - JOURNAL ARTICLE ED - , TI - News AID - 10.1136/gut.30.7.1032-a DP - 1989 Jul 01 TA - Gut PG - 1032--1032 VI - 30 IP - 7 4099 - http://gut.bmj.com/content/30/7/1032.2.short 4100 - http://gut.bmj.com/content/30/7/1032.2.full SO - Gut1989 Jul 01; 30