1. Harvard-MIT Division of Health Sciences and Technology, David H. Koch Institute for Integrative Cancer Research, and Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts.
2. Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, Massachusetts.
3. Microsystems Development and MEMS Fabrication Groups, Charles Stark Draper Laboratory, Cambridge, Massachusetts.
4. Department of Biomedical Engineering, Duke University, Durham, North Carolina.