PT - JOURNAL ARTICLE AU - Ingvar Bjarnason AU - Keith Middleton TI - Effect of polymer coating on faecal recovery of ingested 5-amino salicylic acid in patients with ulcerative colitis AID - 10.1136/gut.29.3.413-a DP - 1988 Mar 01 TA - Gut PG - 413--413 VI - 29 IP - 3 4099 - http://gut.bmj.com/content/29/3/413.2.short 4100 - http://gut.bmj.com/content/29/3/413.2.full SO - Gut1988 Mar 01; 29