The Frequency of Nonmotor Symptoms among Advanced Parkinson Patients May Depend on Instrument Used for Assessment

by Nelson Hwynn, Ihtsham U. Haq, Irene A. Malaty, Andrew S. Resnick, Michael S. Okun, Danica S. Carew, Genko Oyama, Yunfeng Dai, Samuel S. Wu, Ramon L. Rodriguez, Charles E. Jacobson, Hubert H. Fernandez
Published 2011-01-01