1. From the Divisions of Cardiovascular Diseases (E.B.S.) and General Internal Medicine (G.E.R., M.S.V.-S.), Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City; Center for Research in the Implementation of Innovative Strategies in Practice, Iowa City VA Medical Center, Iowa City, Iowa (G.E.R., M.S.V.-S.); and Division of Cardiothoracic Surgery, Department of Surgery, Oregon Health and Science University, Portland (K.F.W.).