Exclusions of cases due to missing data (verbal fluency, delayed recall, MMSE^*) and due to suspected dementia (MMSE-score <4).

Exclusions of cases due to missing data (verbal fluency, delayed recall, MMSE*) and due to suspected dementia (MMSE-score <4).符合以下两类任一条件的病例将被排除：一是言语流畅性测验、延迟回忆测验及简易精神状态检查表（Mini-Mental State Examination，MMSE）*存在数据缺失；二是疑似痴呆且MMSE得分低于4分。