1. From the Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand (J.Z., P.L., Y.W.); Department of Physiology and Cell Biology (B.J.H., T.A.C., P.J.M., P.M.L.J., V.V.F.) and Department of Internal Medicine (R.W., J.D.H.), Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus; and Department of Radiology, Wright Center of Innovation in Biomedical Imaging, Ohio State University, Columbus (M.W.).