a
Computational & Systems Biology Initiative, Massachusetts Institute of Technology, Cambridge, USA
b
Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
E-mail: scottm@media.mit.edu
c
Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, USA
d
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, USA
e
Max Planck Institute for Biophysical Chemistry, Göttingen, Germany