Efficacy of deep brain stimulation of the anterior-medial globus pallidus internus in tic and non-tic related symptomatology in refractory Tourette syndrome oleh Raven Kisten, Riaan van Coller, Nafisa Cassimjee, Elsa Lubbe, Janardan Vaidyanathan, Pieter Slabbert, Nico Enslin, Clara Schutte