TY - JOUR T1 - Gastroenterological Society of Australia JF - Gut JO - Gut SP - 979 LP - 981 DO - 10.1136/gut.11.11.979 VL - 11 IS - 11 A2 - , Y1 - 1970/11/01 UR - http://gut.bmj.com/content/11/11/979.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -