Pramipexole extended-release is effective in early Parkinson´s disease - Poewe, W; Barone, P; Hauser, RA; Mizuno, Y; Rascol, O; Schapira, A; Haaksma, M; Juhel, N; in the name of the pramipexole ER study group (Mov Disord, 2009)