TY - JOUR T1 - Reply JF - Gut JO - Gut SP - 873 LP - 874 DO - 10.1136/gut.29.6.873-a VL - 29 IS - 6 AU - W R Murray Y1 - 1988/06/01 UR - http://gut.bmj.com/content/29/6/873.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -