PT - JOURNAL ARTICLE AU - Michael Atkinson AU - C S Robertson TI - Reply AID - 10.1136/gut.30.6.887 DP - 1989 Jun 01 TA - Gut PG - 887--887 VI - 30 IP - 6 4099 - http://gut.bmj.com/content/30/6/887.1.short 4100 - http://gut.bmj.com/content/30/6/887.1.full SO - Gut1989 Jun 01; 30