TY - JOUR AU - Pickhardt, P J; Choi, J R; Hwang, I TI - Computed tomographic virtual colonoscopy to screen for colorectal neoplasia in asymptomatic adults JO - N Engl J Med VL - 349 PY - 2003 DO - 10.1056/NEJMoa031618 L3 - PubMed-ID: 14657426 SP - 2191 EP - 2200 N1 - et al. ER -