1. Division of Cardiology, Department of Medicine (M.Y.Y., S.R., I.T., E.M.G., J.N.-N., J.S., G.J.S., J.C.F., S.G.D., O.W.-P.)
2. Intermountain Medical Center Heart Institute, Intermountain Medical Center, Salt Lake City, UT (A.G.K., B.B.R.).
3. Division of Cardiothoracic Surgery, Department of Surgery, University of Utah School of Medicine, Salt Lake City (S.H.M., A.K., G.J.S., C.H.S.)
4. George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT (S.H.M., E.M.G., J.N.-N., J.S., J.C.F., S.G.D., C.H.S., O.W.-P.).