Meta-analysis

1. Prevalence of autism spectrum disorders among children in China： a systemati c review
2. Methodology of China's nati onal study on the evaluati on,early recogniti on, and treatment of psychological problems in the elderly： the China Longitudinal Aging Study (CLAS】

Original articles

1. Relationship of changes in cognitive and depressive symptoms during anti depressant treatment of individuals with geriatric depression and their relationship to the APOE epsilon 4 allele
2. Effi cacy and safety of generic escitalopram versus Lexapro in the treatment of major depression： a multi center doubleblinded randomized controlled trial

1. ·In this issue·
2. Comorbidity of mental and physical diseases： a main challenge for medicine of the 21st century
3. Neuroimaging studies in pati ents with obsessive-compulsive disorder in China
4. Pesticides availability and medically serious suicide attempts in China
5. Mild cogniti ve impairment： a concept useful for early detection and intervention of dementia
6. Case Report of Rapid-eye-movement (REM】 sleep behavior disorder
7. The stati sti cs of suicide