1. Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, Georgia 30332, United States
2. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
3. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
4. Department of Biomedical Engineering, University of California Davis, Davis, California 95616, United States
5. Department of Surgery, School of Medicine, University of California Davis, Sacramento, California 95817, United States