TY - JOUR T1 - The digestive system JF - Gut JO - Gut SP - 1018 LP - 1018 DO - 10.1136/gut.25.9.1018-a VL - 25 IS - 9 AU - L A Turnberg Y1 - 1984/09/01 UR - http://gut.bmj.com/content/25/9/1018.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -