Deep Brain Stimulation In the Treatment of Intractable Movement Disorders (Parkinson's Disease, Essential Tremors and Dystonia) Research Authors Ahmed Elshanawany Ahmed Nouby, Ahmed Ibrahim Elgheriany, Amr Elnaggar, Mahmoud Hassan Ragab Research Department Department of Neuro Surgery Research Journal Egyptian Journal of Neurosurgery Research Member Ahmed Radwan El-Noby Mahmoud