Colonoscopic surveillance in long-standing total ulcerative colitis—A 15-year follow-up studyRobert Löfberg, Åke Öst, Olle Broström et al.|Gastroenterology|1990Cited by 197
The Risk of Colorectal Cancer in Ulcerative Colitis: An Epidemiologic StudyOlle Broström, G Hellers, B. Nordenvall et al.|Scandinavian Journal of Gastroenterology|1987Cited by 157
DNA aneuploidy in ulcerative colitis: Reproducibility, topographic distribution, and relation to dysplasiaRobert Löfberg, Bernhard Tribukait, Olle Broström et al.|Gastroenterology|1992Cited by 117
Cancer surveillance of patients with longstanding ulcerative colitis: a clinical, endoscopical, and histological study.Olle Broström, H Reichard, R Lofberg et al.|Gut|1986Cited by 116
Sialyl-Tn antigen as a marker of colon cancer risk in ulcerative colitis: Relation to dysplasia and DNA aneuploidyPer Karlén, Steven H. Itzkowitz, E. T. Young et al.|Gastroenterology|1998Cited by 73