1. Department of Mechanical Engineering University of Minnesota 111 Church St. Minneapolis MN 55455 USA
2. Department of Veterinary Population Medicine Comparative Pathology Shared Resource Masonic Cancer Center University of Minnesota 1988 Fitch Avenue Saint Paul MN 55108 USA
3. Department of Surgery University of Minnesota 420 Delaware Street SE Minneapolis MN 55455 USA
4. Department of Biomedical Engineering University of Minnesota 111 Church St. Minneapolis MN 55455 USA