About the Authors
Department of Biostatistics and Computational Biology, University of Rochester Medical Center, New York, United States of America
Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America
Institute of Theoretical Physics, Cologne University, Köln, Germany
The authors have declared that no competing interests exist.
Analyzed the data: HYL TL. Contributed reagents/materials/analysis tools: HYL ASP SCP TL. Wrote the paper: HYL ASP SCP TL.