Regional CBF changes in Parkinson’s disease: a correlation with motor dysfunction. - Jung-Lung Hsu; Tzyy-Ping Jung; Chien-Yeh Hsu; Wei-Chih Hsu; Yen-Kung Chen; Jeng-Ren Duann; Han-Cheng Wang; Makeig, Scott (European Journal of Nuclear Medicine & Molecular Imaging, 2007)