1. Epidemiological study of mental disorders in the aged in the urban district of Beijing;Chen;Chin J Neurol Psychiatry,1987
2. A study on dementia and Alzheimer disease;Zhang;Shanghai Arch Psychiatry,1989
3. An epidemiological survey of dementia in Xicheng district, Beijing;Chen;Chin Mental Health J,1992
4. Prevalence of senile dementia in urban and rural areas of Luoyang;Mao;Chin J Gerontol,1993
5. An epidemiological study of dementia;Gao;Shanghai Arch Psychiatry,1993