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Dissanayaka, Nadeeka N.W., Elizabeth White, John D. O'Sullivan, Rodney Marsh, Peter A. Silburn, David A. Copland, George D. Mellick, ja Gerard J. Byrne. "Characteristics and Treatment of Anxiety Disorders in Parkinson's Disease." Mov Disord Clin Pract 2015.

Dissanayaka, Nadeeka N.W., et al. "Characteristics and Treatment of Anxiety Disorders in Parkinson's Disease." Mov Disord Clin Pract 2015.