1. Research Center for Public Health and Social Security, School of Public Administration, Hunan University, Changsha, China
2. Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, China
3. Teaching Department, Liuzhou People’s Hospital, Liu Zhou, China
4. Division of Prevention and Community Research & the Consultation Center, Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut, USA
5. Department of Public Health, Zhuzhou Central Hospital, Zhuzhou Central Hospital, Zhuzhou, China