About the Authors

Qiqige Wuyun

Affiliation School of Mathematical Sciences and LPMC, Nankai University, Tianjin, China, 300071

Wei Zheng

Affiliation School of Mathematical Sciences and LPMC, Nankai University, Tianjin, China, 300071

Yanping Zhang

Affiliation Department of Mathematics, School of Science, Hebei University of Engineering, Handan, China, 056038

Jishou Ruan

Affiliations School of Mathematical Sciences and LPMC, Nankai University, Tianjin, China, 300071, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China, 300071

Gang Hu

huggs@nankai.edu.cn

Affiliation School of Mathematical Sciences and LPMC, Nankai University, Tianjin, China, 300071

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GH QW. Performed the experiments: QW. Analyzed the data: QW WZ. Contributed reagents/materials/analysis tools: JR YZ. Wrote the paper: QW GH.