1. Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
2. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
3. Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
4. Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
5. Department of Neuroscience, University of California San Francisco, San Francisco, California 94158, United States
6. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02134, United States