title: [Focus on clinical studies on cognitive impairment].
authors.forename: Yan-sheng
authors.initials: YS
authors.lastname: Li
mesh_terms: D000368:Aged; D003072:Cognition Disorders / Q000175:diagnosis / Q000517:prevention & control; D003704:Dementia / Q000175:diagnosis / Q000517:prevention & control; D006801:Humans