Latent growth-curve analysis reveals that worsening Parkinson's disease quality of life is driven by depression
Neuropsychology (2015) - Comment
pubmed: 25365564  doi: 10.1037/neu0000158  issn: 1931-1559  issn: 0894-4105 

Jacob D. Jones, Michael Marsiske, Michael S. Okun, Dawn Bowers