About the Authors

Chih-Hsuan Wei

Affiliations National Center for Biotechnology Information (NCBI), National Library of Medicine, Bethesda, Maryland, United States of America, Department of Computer Science and Information Engineering, National Cheng Kung University, Taiwan, Republic of China

Hung-Yu Kao

Affiliation Department of Computer Science and Information Engineering, National Cheng Kung University, Taiwan, Republic of China

Zhiyong Lu

zhiyong.lu@nih.gov

Affiliation National Center for Biotechnology Information (NCBI), National Library of Medicine, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ZL HK. Performed the experiments: CW. Analyzed the data: CW. Wrote the paper: CW ZL.