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Title
The Frequency of Nonmotor Symptoms among Advanced Parkinson Patients May Depend on Instrument Used for Assessment
Authors
Hwynn, Nelson; U. Haq, Ihtsham; A. Malaty, Irene; S. Resnick, Andrew; S. Okun, Michael; S. Carew, Danica; Oyama, Genko; Dai, Yunfeng; S. Wu, Samuel; L. Rodriguez, Ramon; E. Jacobson, Charles; H. Fernandez, Hubert