About the Authors

Ying-Yeh Chen

Affiliations Taipei City Psychiatric Center, Taipei City Hospital, Taipei City, Taiwan, Institute of Public Health and Department of Public Health, National Yang-Ming University, Taipei City, Taiwan

Feng Chen

Affiliation Department of Statistics, University of New South Wales, Sydney, Australia

David Gunnell

Affiliation School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

Paul S. F. Yip


Affiliations Hong Kong Jockey Club Center for Suicide Research and Prevention, University of Hong Kong, Hong Kong, China, Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: Y-YC DG PSFY. Performed the experiments: Y-YC PSFY FC. Analyzed the data: FC PSFY. Contributed reagents/materials/analysis tools: FC PSFY. Wrote the paper: Y-YC FC DG PSFY.