PT - JOURNAL ARTICLE AU - Gyde, S N TI - Reply AID - 10.1136/gut.32.6.723 DP - 1991 Jun 01 TA - Gut PG - 723--723 VI - 32 IP - 6 4099 - http://gut.bmj.com/content/32/6/723.1.short 4100 - http://gut.bmj.com/content/32/6/723.1.full SO - Gut1991 Jun 01; 32