... Psychology, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.2Graduate School,Chinese Academy of Sciences, Beijing, China.3Department of ... National Bureau of Statistics of China: China Statistical Yearbook. Beijing2003.18. Pan A, Franco OH, Wang YF, Yu Z, Ye X, Lin X: Prevalence and geographicdisparity of depressive symptoms among middle-aged ... meta-analysis. BBDcollected the data, conducted the analyses, and wrote the paper. JLsupervised the data collection, statistical analysis and paper writing. PChelped with the analyses and reviewed...