Socioeconomic inequalities and mental stress in individual and regional level: a twenty one cities study in China
1 Department of Social Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
2 Department of Sociology, Purdue University, West Lafayette 47907, IN, USA
3 Public Health Studies Program, School of Health and Applied Human Sciences, University of North Carolina, Wilmington 28403, NC, USA