About the Authors

Xiaohua Ye

Contributed equally to this work with: Xiaohua Ye, Jinjian Fu

Affiliations School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong, China, School of Public Health, Guangdong Key Laboratory of Molecular Epidemiology, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China

Jinjian Fu

Contributed equally to this work with: Xiaohua Ye, Jinjian Fu

Affiliations School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong, China, School of Public Health, Guangdong Key Laboratory of Molecular Epidemiology, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China, Liuzhou Municipal Maternity and Child Healthcare Hospital, Liuzhou, Guangxi, China

Yi Yang

Affiliation School of Public Health, Guangdong Key Laboratory of Molecular Epidemiology, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China

Sidong Chen

chensidong1@126.com

Affiliation School of Public Health, Guangdong Key Laboratory of Molecular Epidemiology, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Contributed to the writing of the paper: XHY JJF SDC YY. Conceived and designed the experiments: SDC YY XHY JJF. Performed the experiments: XHY JJF. Analyzed the data: XHY. Contributed reagents/materials/analysis tools: SDC. Wrote the paper: XHY JJF.