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Birchall, Elizabeth L., Harrison C. Walker, Gary Cutter, Stephanie Guthrie, Allen Joop, Raima A. Memon, Ray L. Watts, David G. Standaert, and Amy W. Amara. "The Effect of Unilateral Subthalamic Nucleus Deep Brain Stimulation On Depression in Parkinson’s Disease." Brain Stimul 2016.

Birchall, Elizabeth L., et al. "The Effect of Unilateral Subthalamic Nucleus Deep Brain Stimulation On Depression in Parkinson’s Disease." Brain Stimul 2016.