Hill Alexander J, Coles James A, Sigg Daniel C, Laske Timothy G, Iaizzo Paul A
Department of Biomedical Engineering, University of Minnesota, Mayo Mail Code 107, 420 Delaware St, SE, Minneapolis, MN 55455, USA.
Ann Thorac Surg. 2003 Dec;76(6):2108. doi: 10.1016/s0003-4975(03)00268-6.