Affiliation: | 1. Department of Sociology, Central South University, Changsha, China;2. Social Survey and Opinion Research Centre, Central South University, Changsha, China;3. School of Health Humanities, Peking University, Beijing, China;4. School of Sociology & Anthropology, Sun Yat-sen University, Guangzhou, China;5. National School of Development, Peking University, Beijing, China |