TY - JOUR AU - Lieberman, D A; Rex, D K; Winawer, S J TI - Guidelines for colonoscopy surveillance after screening and polypectomy: a consensus update by the US Multi-Society Task Force on Colorectal Cancer JO - Gastroenterology VL - 143 PY - 2012 DO - 10.1053/j.gastro.2012.06.001 L3 - PubMed-ID: 22763141 SP - 844 EP - 857 N1 - et al. ER -