About the Authors

Pengjuan Xu

Affiliation College of Medicine, Nankai University, Tianjin, China

Jing Xu

Affiliation College of Medicine, Nankai University, Tianjin, China

Zhigui Li

Affiliation College of Medicine, Nankai University, Tianjin, China

Zhuo Yang

zhuoyang@nankai.edu.cn

Affiliation College of Medicine, Nankai University, Tianjin, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ZY. Performed the experiments: PJX JX ZGL. Analyzed the data: PJX JX. Contributed reagents/materials/analysis tools: PJX JX. Wrote the paper: PJX JX ZY.