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Response to Hill-Burns et al. letter: An attempt to replicate interaction between coffee and CYP1A2 gene in connection to Parkinson’s disease


R. A. Popat, Department of Health Research and Policy, HRP Redwood Building, Room T209, Stanford University School of Medicine, Stanford, CA 94305-5405, USA (tel.: 650 498 5206; fax: 650 725 6951; e-mail:

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