TY - JOUR T1 - Reply JF - Gut JO - Gut SP - 428 LP - 429 DO - 10.1136/gut.34.3.428-a VL - 34 IS - 3 AU - T C B Dehn Y1 - 1993/03/01 UR - http://gut.bmj.com/content/34/3/428.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -