About the Authors
- Zhiming Dai, Xianhua Dai
- School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, China
The authors have declared that no competing interests exist.
Conceived and designed the experiments: ZD. Performed the experiments: ZD. Analyzed the data: ZD XD. Contributed reagents/materials/analysis tools: ZD. Wrote the paper: ZD.