1. Center for Regenerative Therapeutics and Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Harvard Stem Cell Institute, Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Cambridge, MA;
2. Center for Systems Biology, Advanced Microscopy Program, Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA;
3. Department of Biomedical Engineering, Science and Technology Center, Tufts University, Medford, MA; and
4. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA