R Nandhagopal, L Kuramoto, M Schulzer, E Mak, J Cragg, C. S Lee, J McKenzie, S McCormick, A Samii, A Troiano, T. J Ruth, V Sossi, R de la Fuente Fernandez, D. B Calne and A. J. Stoessl
Brain 132 ( 11 ): 2970 - 2979 , 2009