1. Department of Mechanical Engineering, University of Washington, Seattle, Washington, USA;
2. Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
3. Department of Bioengineering, University of Washington, Seattle, Washington, USA
4. Allen Institute for Neural Dynamics, Seattle, Washington, USA
5. Department of Chemistry, University of Washington, Seattle, Washington, USA
6. Department of Physiology and Biophysics, University of Washington, Seattle, Washington, USA