1. George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
2. Coulter School of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
3. United States Department of Agriculture, National Centers for Animal Health, Ames, Iowa 50010, USA
4. George W. Woodruff School of Mechanical Engineering, Coulter School of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA