1. Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
2. United States Army Medical Research Institute of Infectious Diseases, Frederick, Maryland 21702, United States
3. West Springfield High School, Springfield, Virginia 22152, United States
4. Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
5. Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratories, Washington, D.C. 20375, United States