title: Studies on induced exacerbation of Parkinsonian rigidity: The effect of contralateral voluntary activity.
authors: Department of Neurologic Surgery, St. Barnabas Hospital for Chronic Diseases, New York, U.S.A.
authors: K
authors: K
authors: Matsumoto
authors: F
authors: F
authors: Rossmann
authors: T H
authors: TH
authors: Lin
authors: I S
authors: IS
authors: Cooper
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