TY - JOUR AU - Brenner, H; Chang-Claude, J; Seiler, C M TI - Potential for colorectal cancer prevention of sigmoidoscopy versus colonoscopy: population-based case control study JO - Cancer Epidemiol Biomarkers Prev VL - 16 PY - 2007 DO - 10.1158/1055-9965.EPI-06-0460 SP - 494 EP - 499 N1 - et al. ER -