The motor phenotype of Parkinson's disease in relation to age at onset.
BACKGROUND: Parkinson's disease (PD) is heterogeneous and age at onset may define variation in clinical phenotype. Most previous studies have used various age cut-offs and have been based on clinical case series. METHODS: We have studied the association between clinical features and age of ons...
Main Authors: | , , , , , , , , , , , , , , |
---|---|
Format: | Journal article |
Language: | English |
Published: |
2011
|