TY - JOUR T1 - Effect of polymer coating on faecal recovery of ingested 5-amino salicylic acid in patients with ulcerative colitis JF - Gut JO - Gut SP - 413 LP - 413 DO - 10.1136/gut.29.3.413-a VL - 29 IS - 3 AU - Ingvar Bjarnason AU - Keith Middleton Y1 - 1988/03/01 UR - http://gut.bmj.com/content/29/3/413.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -