Increased dopamine transporter density in Parkinson's disease patients with social anxiety disorder - Moriyama, Tais S.; Felício, Andre Carvalho; Chagas, Marcos Hortes Nisihara; Tardelli, Vitor S.; Ferraz, Henrique Ballalai; Tumas, Vitor; Amaro Júnior, Edson; Andrade, Luiz Augusto Franco de; Crippa, José Alexandre de Souza; Bressan, Rodrigo Affonseca (Journal of the Neurological Sciences, 2011)