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Parkinson's Disease
Multiple System Atrophy
Torticollis
Parkinsonian Disorders
Antiparkinson Agents
Type A Botulinum Toxins
Levodopa
Neuromuscular Agents
Botulinum Toxins
Severity of Illness Index
Randomized Controlled Trials
Treatment Outcome
Reproducibility of Results
Questionnaires
Clinical Trials as Topic
Double-Blind Method
Evidence-Based Medicine
Europe
Portugal
Disease Progression
Co-Publications
43
30
26
17
16
13
12
10
9
8
7
6
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