PT - JOURNAL ARTICLE AU - I M FRAYLING TI - Microsatellite instability AID - 10.1136/gut.45.1.1 DP - 1999 Jul 01 TA - Gut PG - 1--4 VI - 45 IP - 1 4099 - http://gut.bmj.com/content/45/1/1.short 4100 - http://gut.bmj.com/content/45/1/1.full SO - Gut1999 Jul 01; 45