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Levodopa
Homocysteine
Antiparkinson Agents
Dopamine Agonists
Vitamin B 12
Folic Acid
Lisuride
Pergolide
Parkinson's Disease
Parkinsonian Disorders
Cognition Disorders
Hemifacial Spasm
Hypokinesia
Blepharospasm
Dyskinesias
Neurologic Examination
Age of Onset
Demography
Chi-Square Distribution
Retrospective Studies
Co-Publications
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