The cognitive functions were evaluated with Alzheimer disease assessment scale-Cognitive portion (ADAS-Cog), Wechsler memory scale-revised and Mini-Mental Status Examination (MMSE).

• 采用阿尔茨海默病评定量表 -认知部分 (ADAS-Cog)、韦氏记忆量表 -修订版 (WMS -R)和简短心理状况检查 (MMSE)评估认知功能。