TY - JOUR AU - Robertson, D J TI - Colorectal cancer in patients under close colonoscopic surveillance JO - Gastroenterology VL - 129 PY - 2005 DO - 10.1053/j.gastro.2005.05.012 L3 - PubMed-ID: 16012932 SP - 34 EP - 41 N1 - et al. ER -