Endoscopy, Table of Contents Endoscopy 2015; 47(08): 760DOI: 10.1055/s-0034-1392534 Letters to the editor © Georg Thieme Verlag KG Stuttgart · New YorkReply to Villanacci et al. Authors Marietta Iacucci Xianyong Gui Subrata Ghosh Recommend Article Abstract Buy Article(opens in new window) Full Text References References 1 Villanacci V, Antonelli E, Salemme M et al. Assessing mucosal healing in ulcerative colitis: the simpler, the better. Endoscopy 2015; 47: 759 2 Mosli MH, Feagan BJ, Sandborn WJ et al. Histologic evaluation of ulcerative colitis: a systematic review of disease activity indices. Inflamm Bowel Dis 2014; 20: 564-575