PT - JOURNAL ARTICLE ED - , TI - Neoplasia AID - 10.1136/gut.38.Suppl_1.A16 DP - 1996 Jan 01 TA - Gut PG - A16--A18 VI - 38 IP - Suppl 1 4099 - http://gut.bmj.com/content/38/Suppl_1/A16.short 4100 - http://gut.bmj.com/content/38/Suppl_1/A16.full SO - Gut1996 Jan 01; 38