1. Department of Mechanical
Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
2. Harvard−MIT Division of Health Sciences and Technology, Cambridge,
Massachusetts 02139, United States
3. Department of Physics and
SEAS, Harvard University,
Cambridge, Massachusetts 02138, United States
4. Columbia Initiative in Systems
Biology, Department of Biochemistry and Molecular Biophysics, Columbia University Medical Center,
New York, New York 10032, United States