1049 Identification of Items to Be Included in an Ulcerative Colitis Endoscopic Index of Severity (UCEIS)
Simon Travis,William J. Sandborn,Stephen B. Hanauer,Marc Lemann,Bruce E. Sands,Philippe Marteau,Jean-Frederic Colombel,Maria T. Abreu,Gary R. Lichtenstein,Brian G. Feagan,Douglas G. Altman,Jean-Yves Mary,Daniel Schnell,Bruce Yacyshyn,Piotr Krzeski,Christian A. Bernhardt GASTROENTEROLOGY（2009）
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