Neuroimaging of major depression in Parkinson's disease: cortical thickness, cortical and subcortical volume, and spectroscopy findings - Chagas, Marcos Hortes Nisihara; Tumas, Vitor; Pena-Pereira, Márcio Alexandre; Machado-de-Sousa, João Paulo; Santos, Antônio Carlos dos; Sanches, Rafael Faria; Hallak, Jaime Eduardo Cecílio; Crippa, José Alexandre de Souza (Journal of Psychiatric Research, 2017)