Indigo Carmine-Assisted High-Magnification Chromoscopic Colonoscopy for the Detection and Characterisation of Intraepithelial Neoplasia in Ulcerative Colitis: A Prospective Evaluation - Hurlstone, D P; Sanders, D S; Lobo, A J; McAlindon, M E; Cross, S S (Endoscopy, 2005)