About the Authors
Department of Computer Science, Columbia University, New York, New York, United States of America
Center for Computational Biology and Bioinformatics, Columbia University, New York, New York, United States of America
Department of Biochemistry and Molecular Biophysics, Howard Hughes Medical Institute, Columbia University Medical Center, New York, New York, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: YS SS YL OH IP. Performed the experiments: YS SS YL IP. Analyzed the data: YS SS YL OH IP. Wrote the paper: YS SS OH IP.