About the Authors

Gelio Alves

Affiliation National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America

Aleksey Y. Ogurtsov

Affiliation National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America

Yi-Kuo Yu

yyu@ncbi.nlm.nih.gov

Affiliation National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GA YKY. Performed the experiments: GA AYO. Analyzed the data: GA AYO YKY. Wrote the paper: GA YKY.