1. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
2. BioSystems and Micromechanics (BioSyM) IRG, Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore
3. Singapore Institute of Manufacturing Technology (SIMTech), A*STAR, Singapore
4. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
5. Department of Bioengineering, National University of Singapore, Singapore
6. Mechanobiology Institute, National University of Singapore, Singapore
7. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA