About the Authors
National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America
Theoretical Biology and Bioinformatics Group, Utrecht University, Utrecht, The Netherlands
The authors have declared that no competing interests exist.
Conceived and designed the experiments: NT PH. Performed the experiments: NT. Analyzed the data: NT. Contributed reagents/materials/analysis tools: NT. Wrote the manuscript: NT PH EVK. Interpreted the results: NT PH EVK.