Is Telomere Length shortening a Predictive Biomarker for Cancer Risk in Ulcerative Colitis? - O'Sullivan, J; O'Riain, C; Gorman, J; Keegan, D; Mulcahy, H; Hyland, J; Fennelly, D; Sheahan, K; O'Donoghue, D (Endoscopy, 2004)