Author information:
(1)Program in Systems Biology, Department of Biochemistry and Molecular 
Pharmacology, University of Massachusetts Medical School, Howard Hughes Medical 
Institute, Worcester, Massachusetts 01605, USA.
(2)Department of Cell and Developmental Biology, University of Illinois, 
Urbana-Champaign, Illinois 61801, USA.
(3)Division of Biology and Biological Engineering, California Institute of 
Technology, Pasadena, California 91125, USA.
(4)Department of Bioengineering, University of California San Diego, La Jolla, 
California 92093, USA.
(5)Department of Molecular Biology and Genetics, Cornell University, Ithaca, New 
York 14853, USA.
(6)Department of Biochemistry and Molecular Biophysics, Mortimer B. Zuckerman 
Mind Brain and Behavior Institute, Columbia University, New York, New York 
10027, USA.
(7)Institute for Medical Engineering and Science, and Department of Physics, 
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
(8)Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, 
La Jolla, California 92037, USA.
(9)Department of Biomedical Informatics, Harvard Medical School, Boston, 
Massachusetts 02115, USA.
(10)Ludwig Institute for Cancer Research, Department of Cellular and Molecular 
Medicine, Institute of Genomic Medicine, Moores Cancer Center, University of 
California San Diego, La Jolla California 92093, USA.
(11)Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue 
North, Seattle, Washington 98109, USA.
(12)Department of Genome Sciences, University of Washington, Howard Hughes 
Medical Institute, Seattle, Washington 98109, USA.