About the Authors

Shuang Wang

Affiliation Department of Orthodontics, Stomatological Hospital, Key Laboratory of Environment and Genes Related to Diseases, Department of Public Health, College of Medicine, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi, P.R. China

Xiong Guo

guox@mail.xjtu.edu.cn

Affiliation Department of Orthodontics, Stomatological Hospital, Key Laboratory of Environment and Genes Related to Diseases, Department of Public Health, College of Medicine, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi, P.R. China

Xiao-ming Wu

Affiliation The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, P.R.China

Mikko J. Lammi

Affiliation Department of Biosciences, University of Eastern Finland, Kuopio, Finland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XG SW. Performed the experiments: SW XG. Analyzed the data: X-MW MJL. Contributed reagents/materials/analysis tools: XG X-MW. Wrote the paper: SW XG MJL.