1. From the Section of Vascular Surgery, Department of Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH (P.P.G.); The Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth Medical School, Hanover, NH (P.P.G., D.C.G., E.S.F.); the Center for Outcomes Research and Evaluation, Maine Medical Center, Portland (L.L.T., F.L.L.); the Center for Health Outcomes and Policy (B.K.N., K.H.) and the Section of Vascular Surgery (P.K.H., J.D.B.), The University of Michigan, Ann Arbor; and the...