1. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
2. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA.
3. Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
4. Department of Neurology, Emory University, Atlanta, GA, USA.
5. Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA.