PT - JOURNAL ARTICLE AU - De Vos, M TI - Reply AID - 10.1136/gut.34.5.713-c DP - 1993 May 01 TA - Gut PG - 713--714 VI - 34 IP - 5 4099 - http://gut.bmj.com/content/34/5/713.4.short 4100 - http://gut.bmj.com/content/34/5/713.4.full SO - Gut1993 May 01; 34