Higher dopamine transporter density in Parkinson's disease patients with depression - Felicio, Andre C; Moriyama, Tais S; Godeiro Junior, Clecio; Shih, Ming; Hoexter, Marcelo Qnce Lee; Borges, Vanderci; Silva, Sonia M. A; Amaro Junior, Edson; Andrade, Luiz A; Ferraz, Henrique B; Bressan, Rodrigo A (Psychopharmacology, 2010)