PT - JOURNAL ARTICLE ED - , TI - News AID - 10.1136/gut.29.4.559 DP - 1988 Apr 01 TA - Gut PG - 559--560 VI - 29 IP - 4 4099 - http://gut.bmj.com/content/29/4/559.short 4100 - http://gut.bmj.com/content/29/4/559.full SO - Gut1988 Apr 01; 29