PT - JOURNAL ARTICLE AU - Ali Keshavarzian TI - Reply AID - 10.1136/gut.32.2.232-a DP - 1991 Feb 01 TA - Gut PG - 232--232 VI - 32 IP - 2 4099 - http://gut.bmj.com/content/32/2/232.2.short 4100 - http://gut.bmj.com/content/32/2/232.2.full SO - Gut1991 Feb 01; 32