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Genotype and age at Parkinson disease diagnosis.Susan Searles Nielsen, Harvey Checkoway, Theo K. Bammler et al.|PubMed|2013Cited by 19
DNA sequence analysis of monoamine oxidase B gene coding and promoter regions in Parkinson's disease cases and unrelated controlsPaola Costa‐Mallen, Harvey Checkoway, Zahra Afsharinejad et al.|Movement Disorders|2004Cited by 12