PT - JOURNAL ARTICLE AU - R C Spiller TI - Progress report DP - 2004 Mar 01 TA - Gut PG - 317--317 VI - 53 IP - 3 4099 - http://gut.bmj.com/content/53/3/317.1.short 4100 - http://gut.bmj.com/content/53/3/317.1.full SO - Gut2004 Mar 01; 53