About the Authors

Xiao-Ping Chen

chxp@zjut.edu.cn

Affiliation College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, China

Wei-Feng Chen

Affiliation College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, China

Da-Wei Wang

Affiliation College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XCh WCh. Performed the experiments: WCh DW. Analyzed the data: WCh XCh DW. Wrote the paper: XCh DW.