1. Division of Materials Science and Engineering Boston University Boston MA 02215 USA
2. Department of Biomedical Engineering Boston University Boston MA 02215 USA
3. Department of Biomedical Engineering Tufts University Medford MA 02155 USA
4. Department of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
5. Institute of High Performance Computing A∗STAR 1 Fusionopolis Way Singapore 138632 Singapore