From the Department of Aerospace and Mechanical Engineering (P.S.), University of Notre Dame, Ind; the Wallace H. Coulter Department of Biomedical Engineering (P.S., K.B., A.P.Y.) and the School of Physics (A.E.), Georgia Institute of Technology, Atlanta, Ga; and the Wallace H. Coulter Department of Biomedical Engineering and the Division of Cardiology (H.J.), Emory University, Atlanta, Ga.(2009-02時点)