Randomized Controlled Trial
Deep-brain stimulation of the subthalamic nucleus or the pars interna of the globus pallidus in Parkinson's disease.
N. Engl. J. Med. 2001 Sep 27;345(13):956-63.
Randomized Controlled Trial
Pallidal versus subthalamic deep-brain stimulation for Parkinson's disease.
N. Engl. J. Med. 2010 Jun 3;362(22):2077-91.
Randomized Controlled Trial
Pallidal vs subthalamic nucleus deep brain stimulation in Parkinson disease.
Arch Neurol Chicago. 2005 Apr 1;62(4):554-60.