About the Authors
- Wu Jie, Zhou Xiaolan, Lu Ciyong, Wang Hui, Hong Lingyao, Deng Xueqing
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
- Eileen Moyer
- Amsterdam Institute of Social Science Research, Department of Sociology and Cultural Anthropology, University of Amsterdam, Amsterdam, The Netherlands
The authors have declared that no competing interests exist.
Conceived and designed the experiments: LCY WJ ZXL. Performed the experiments: WJ ZXL. Analyzed the data: ZXL WJ. Contributed reagents/materials/analysis tools: DXQ. Wrote the paper: WJ. Obtained permission for use of the software used in analysis: WH HLY DXQ.