Melina G.H.E. den Brok, Jan Willem van Dalen, Willem A. van Gool, Eric P. Moll van Charante et al.
Apathy is a frequently reported neuropsychiatric symptom in Parkinson's disease (PD), but its prevalence and clinical correlates are debated. We aimed to address these issues by conducting a systematic review and meta-analysis. Embase, Medline/PubMed, and PsychINFO databases were searched for releva...