TY - JOUR T1 - Correspondence JF - Gut JO - Gut SP - 429 LP - 429 DO - 10.1136/gut.26.4.429-a VL - 26 IS - 4 AU - David R Nalin Y1 - 1985/04/01 UR - http://gut.bmj.com/content/26/4/429.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -