PT - JOURNAL ARTICLE AU - Marteau, Philippe TI - Evaluation of disease extent with the Crohn's disease endoscopic index of severity AID - 10.1136/gutjnl-2013-305557 DP - 2013 Dec 01 TA - Gut PG - 1819--1820 VI - 62 IP - 12 4099 - http://gut.bmj.com/content/62/12/1819.short 4100 - http://gut.bmj.com/content/62/12/1819.full SO - Gut2013 Dec 01; 62