About the Authors

Wen-Chao Zhang

Affiliation Department of Epidemiology and Health Statistics, Shandong University School of Public Health, Jinan, China

Cun-Xian Jia

jiacunxian@sdu.edu.cn

Affiliations Department of Epidemiology and Health Statistics, Shandong University School of Public Health, Jinan, China, Shandong University Center for Suicide Prevention Research, Jinan, China

Ji-Yu Zhang

Affiliation Shandong Center for Disease Prevention and Control, Jinan, China

Lin-Lin Wang

Affiliation Ji’nan Shizhongqu Center for Disease Prevention and Control, Jinan, China

Xian-Chen Liu

Affiliations Department of Epidemiology and Health Statistics, Shandong University School of Public Health, Jinan, China, University of Tennessee Health Science Center, Memphis, Tennessee, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CXJ. Performed the experiments: WCZ LLW. Analyzed the data: WCZ LLW XCL. Contributed reagents/materials/analysis tools: CXJ LLW. Wrote the paper: WCZ CXJ XCL. Revision and final decision: CXJ. Suggestions about the analysis and explanation for this manuscript: JYZ. Revision: XCL