1. From Department of Surgery, Section of Cardiac Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH (A.I., D.J.M., J.N.M., J.P.D., E.M.O., A.W.D.); Department of Medicine, Section of Cardiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH (D.J.M.); Department of Surgery, Section of Cardiac Surgery, University of Vermont Medical Center, Burlington (J.D.S., B.J.L.); Department of Surgery, Section of Cardiac Surgery, Central Maine Medical Center, Lewiston (P.W.W.); Department of Surgery,...