TY - JOUR T1 - Reply JF - Gut JO - Gut SP - 431 LP - 431 DO - 10.1136/gut.40.3.431-c VL - 40 IS - 3 AU - Qb Zhang AU - Im Nakshabendi AU - Ms Mokhashi AU - Jb Dawodu AU - Cg Gemmell AU - Ri Russell Y1 - 1997/03/01 UR - http://gut.bmj.com/content/40/3/431.4.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -