1. Mem. ASME Biomedical Engineering, University of Wisconsin—Madison, 2145 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail:
2. Surgery, University of Wisconsin—Madison, 2143 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail:
3. Molecular & Integrative Physiology, University of Michigan—Ann Arbor, 2800 Plymouth Road, North Campus Research Center, Ann Arbor, MI 48109-5622 e-mail:
4. Mechanical Engineering, University of Wisconsin—Madison, 2145 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail:
5. Biomedical Engineering, University of Wisconsin—Madison, 2145 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail:
6. Mechanical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80521 e-mail:
7. Biomedical Engineering, University of Wisconsin—Madison, 2144 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail:
8. Medicine, University of California—San Francisco, 4150 Clement St, San Francisco, CA 94121; VA Medical Center, 4150 Clement St., San Francisco, CA 94121 e-mail:
9. Fellow ASME Biomedical Engineering, University of Wisconsin—Madison Medicine, 2146 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53706 e-mail: