About the Authors
Complexity Sciences Center, Physics Department, University of California Davis, Davis, California, United States of America
Computer Science Department, Columbia University, New York, New York, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JPC SW. Performed the experiments: JPC SW. Analyzed the data: JPC SW. Contributed reagents/materials/analysis tools: JPC SW. Wrote the paper: JPC SW.