6Zhang MY, Katzman R, Salmon D, et al. The prevalence of dementia and Alzheimer′s disease in Shanghai, China: impact of age, gender, and education. Ann Neurol, 1990,27: 428-437.
9de Silva HA, Gunatilake SB, Smith AD. Prevalence of dementia in a semi-urban population in Sri Lanka: report from a regional survey. Int J Geriatr Psychiatry, 2003, 18: 711-715.
10Lee DY, Lee JH, Ju YS, et al. The prevalence of dementia in older people in an urban population of Korea: the Seoul study. J Am Geriatr Soc, 2002,50: 1233-1239.
