1. Institute for Systems Biology, Seattle, Washington 98109, United States
2. Department of Genome Sciences, University of Washington, Seattle, Washington 98195, United States
3. Quantitative Biosciences Institute (QBI), University of California San Francisco, San Francisco, California 94158, United States
4. J. David Gladstone Institutes, San Francisco, California 94158, United States
5. Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, California 94158, United States