AU - Imperiale TF TI - Screening for colorectal cancer in the elderly population: How much is enough? PT - JOUR DP - 2011 TA - Archives of Internal Medicine pages = {1332-1334}, VI - 171 IP - 15 AID - 10.1001/archinternmed.2011.364 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2011.364 SO - Archives of Internal Medicine August 8, 2011 171(15):1332