1. Department of Anesthesiology (T.E., J.B.), University of Colorado Anschutz Medical Campus, Aurora.
2. Division of Cardiology, Department of Medicine (T.E., L.A.W.), University of Colorado Anschutz Medical Campus, Aurora.
3. Department of Biomedical Sciences, Centre for Cardiovascular Investigations, University of Guelph, ON, Canada (T.N.K., S.R.F.T., N.M.B., T.A.M.).