HIGHLIGHTS
- who: / and collaborators from the Department of Neurology, the Affiliated Changzhou No, People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China have published the paper: Association between BDNF G196A (Val66Met) polymorphism and cognitive impairment in patients with Parkinson ’ s disease: a meta-analysis, in the Journal: (JOURNAL)
- how: The following information from each study was collected surname of first author year of publication country ethnicity sample size and genotype distributions among cases and controls. The characteristics of the selected studies are presented in Table 1.
- future: More large-sample studies following the . . .
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