The Cats-and-Dogs test: A tool to identify visuoperceptual deficits in Parkinson's disease

Clinical variables and biomarkers in prediction of cognitive impairment in patients with newly diagnosed Parkinson's disease: a cohort study

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Pathological α-synuclein distribution in subjects with coincident Alzheimer’s and Lewy body pathology

(2015) Jon B. Toledo et al.   ACTA NEUROPATHOLOGICA

Primary vision and facial emotion recognition in early Parkinson's disease

(2014) Géraldine Hipp et al.   JOURNAL OF THE NEUROLOGICAL SCIENCES

The CamPaIGN study of Parkinson's disease: 10-year outlook in an incident population-based cohort

(2013) Caroline H Williams-Gray et al.   JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY

Cerebral Glucose Metabolic Features of Parkinson Disease and Incident Dementia: Longitudinal Study

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reCAPTCHA: Human-Based Character Recognition via Web Security Measures

(2008) Luis von Ahn et al.   SCIENCE