368 F.3d 820 Mary Louise DUNCAN, Appellant,v.Jo Anne B. BARNHART, Commissioner of Social Security, Appellee. No. 03-1788. United States Court of Appeals, Eighth Circuit. Submitted: March 10, 2004. Filed: May 3, 2004. Ruth Carter, argued, Sioux City, IA (Roger L. Carter, on the brief), for appellant. Christopher Hagen, Asst. U.S. Atty., argued, Des Moines, IA […]