Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
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Cognitive assessment of a representative community population with Parkinson’s disease (PD) using the Cambridge Cognitive Assessment–Revised (CAMCOG-R)
Montreal Cognitive Assessment Performance in Patients with Parkinson's Disease with “Normal” Global Cognition According to Mini‐Mental State Examination Score
The detection of dementia and cognitive impairment in a community population of elderly people with Parkinson's disease by use of the CAMCOG neuropsychological test
Parkinson's disease‐cognitive rating scale: A new cognitive scale specific for Parkinson's disease
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no DOI — not checkedFahn S Elton RL the UPDRS Development Committee. Unified Parkinson’s Disease Rating Scale. In: Fahn S Marsden CD Calne D Goldstein M eds. Recent Developments in Parkinson’s Disease. Florham Park NJ: Macmillan Health Care Information; 1987:153–163.
no DOI — not checkedSPSS for Windows version 15.0. Chicago: SPSS Inc.; 2007.
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no DOI — not checkedAmerican Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders 4th ed rev. Washington DC: American Psychiatric Association; 2000.
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