1. James T. Willerson Center for Cardiovascular Modeling and Simulation, The Oden Institute for Computational Engineering and Sciences, Department of Biomedical Engineering, The University of Texas at Austin , Austin, TX 78712-1229
2. Departments of Radiology and Bioengineering, University of Pennsylvania , Philadelphia, PA 19104
3. Visible Heart Laboratories, Department of Surgery, University of Minnesota , Minneapolis, MN 55455
4. Gorman Cardiovascular Research Group, Department of Surgery, Smilow Center for Translational Research, Perelman School of Medicine, University of Pennsylvania , Philadelphia, PA 19104