TY - JOUR AU - Bisschops, R; Bessissow, T; Joseph, J A TI - Chromoendoscopy versus narrow band imaging in UC: a prospective randomised controlled trial JO - Gut VL - 67 PY - 2018 DO - 10.1136/gutjnl-2016-313213 L3 - PubMed-ID: 28698230 SP - 1087 EP - 1094 N1 - et al. ER -